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Local Authentication

A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).

  1. Features
  2. Changelog
  3. Usage 3.1. Initialization 3.2. Localization 3.3. Querying support and performing Local Authentication
  4. Considerations 4.1. canAuthenticate 4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct

Features

  • Detects if biometric authentication can be done in the current platform (canAuthenticate).

  • Triggers platform's native authentication for the current user (authenticate).

  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value

  • Localized messages for iOS, macOS and Android

Usage

Initialization

Initialize an instance of the plugin, which requires no input parameters.

final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();

Localization

At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.

final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);

Querying support and performing Local Authentication

Two functions are available for the core feature of this library:

  • canAuthenticate
  • authenticate

Depending on each platform the behaviour of canAuthenticate can differ.

bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}

Considerations

canAuthenticate

The function canAuthenticate will return true in the following scenarios.

  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:

    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL

  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:

    • deviceOwnerAuthenticationWithBiometrics

  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:

    • deviceOwnerAuthentication

  • linux: true if fprintd-verify is installed and user can execute it.

Supported platforms

  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer

Next Steps

  • Add support to Windows Hello

About

A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).

eaceto.dev

Topics

androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity

Resources

Readme
MIT license

Code of conduct

Code of conduct

Contributing

Contributing
Activity

Stars

4 stars

Watchers

2 watching

Forks

10 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
Local Authentication
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
  1. Features
  2. Changelog
  3. Usage
3.1. Initialization
3.2. Localization
3.3. Querying support and performing Local Authentication
  4. Considerations
4.1. canAuthenticate
4.2. Supported Platforms
  5. Next Steps
  6. Contribution
  7. License
  8. Code of Conduct
Features
  • Detects if biometric authentication can be done in the current platform (canAuthenticate).
  • Triggers platform's native authentication for the current user (authenticate).
  • Read/Write macOS/iOS touchIDAuthenticationAllowableReuseDuration value
  • Localized messages for iOS, macOS and Android
Usage
Initialization
Initialize an instance of the plugin, which requires no input parameters.
final _flutterLocalAuthenticationPlugin =FlutterLocalAuthentication();
Localization
At any time a localization model can be applied. The latests applied is used by the plugin when the local authentication is performed.
final localization =LocalizationModel(
promptDialogTitle:"title for dialog",
promptDialogReason:"reason for prompting biometric",
cancelButtonTitle:"cancel"
);
_flutterLocalAuthenticationPlugin.setLocalizationModel(localization);
Querying support and performing Local Authentication
Two functions are available for the core feature of this library:
  • canAuthenticate
  • authenticate
Depending on each platform the behaviour of canAuthenticate can differ.
bool canAuthenticate;
try {
// Query suppor for Local Authentication
canAuthenticate =await _flutterLocalAuthenticationPlugin.canAuthenticate();
// Setup TouchID Allowable Reuse duration// It works only in iOS and macOS, but it's safe to call it even on other platforms.await _flutterLocalAuthenticationPlugin.setTouchIDAuthenticationAllowableReuseDuration(30);
} onExceptioncatch (error) {
debugPrint("Exception checking support. $error");
canAuthenticate =false;
}
if (canAuthenticate) {
// Perform Local Authentication
_flutterLocalAuthenticationPlugin.authenticate().then((authenticated) {
String result ='Authenticated: $authenticated';
// handle result
}).catchError((error) {
String result ='Exception: $error';
// handle error
});
}
Considerations
canAuthenticate
The function canAuthenticate will return true in the following scenarios.
  • Android: true if BiometricManager returns that it can authenticate with one of the following allowed authenticators:
    • BiometricManager.Authenticators.BIOMETRIC_STRONG
    • BiometricManager.Authenticators.BIOMETRIC_WEAK
    • BiometricManager.Authenticators.DEVICE_CREDENTIAL
  • iOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthenticationWithBiometrics
  • macOS: true if LAContext.supportsLocalAuthentication returns true for device policy:
    • deviceOwnerAuthentication
  • linux: true if fprintd-verify is installed and user can execute it.
Supported platforms
  • iOS 12 or newer
  • macOS 10.12.2 or newer
  • Linux (requires libfprint)
  • Android 6.0 or newer
Next Steps
  • Add support to Windows Hello
About
A flutter plugin that allows access to Local Authentication / Biometrics on iOS, macOS, Linux and Android (Windows Hello is a work in progress).
eaceto.dev
Topics
androidbiometricbiometric-authenticationbiometric-identificationdartfingerprintflutterioslocal-authenticationmacospasswordpluginsecurity
Resources
Readme
MIT license
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
4 stars
Watchers
2 watching
Forks
10 forks
Report repository
Releases
Packages
Used by
Contributors
Languages