Program.cs

using System;
using System.DirectoryServices.AccountManagement;
using System.Linq;
using System.Threading.Tasks;
using KeepKeySharp.Contracts;
using NBitcoin;

namespace KeepKeySharp.Console
{
 class Program
 {
 private UserPrincipal _currentUser;

 static void Main(string[] args)
 {
 var p = new Program();
 p.Run().Wait();
 }

 private async Task Run()
 {
 _currentUser = UserPrincipal.Current;

 System.Console.WriteLine("Welcome to the KeepKey C# example console!");
 System.Console.WriteLine("Attempting to find KeepKey...");

 using (var kk = new KeepKeyDevice())
 {
 kk.Connected += KkOnConnected;
 kk.Disconnected += KkOnDisconnected;

 if (!kk.TryOpenDevice())
 {
 System.Console.WriteLine();
 System.Console.WriteLine("No KeepKey connected. Please connect KeepKey to the computer NOW. (Leave the console running)");

 await kk.WaitForKeepKeyConnectionAsync();
 }

 System.Console.WriteLine();
 System.Console.WriteLine("Getting features...");

 // Step 1. Initialize the device and get a list of it's features
 var features = kk.Initialize();

 // Print features to console - ouch!
 System.Console.WriteLine("Vendor: {0}", features.Vendor);
 System.Console.WriteLine("DeviceId: {0}", features.DeviceId);
 System.Console.WriteLine("Label: {0}", features.Label);
 System.Console.WriteLine("Version: {0}.{1}.{2}", features.MajorVersion.GetValueOrDefault(), features.MinorVersion.GetValueOrDefault(), features.PatchVersion.GetValueOrDefault());
 System.Console.WriteLine("Coins: {0}", features.Coins.Select(c => $"{c.CoinName} ({c.CoinShortcut})").Aggregate((c, n) => $"{c}, {n}"));
 if (features.Policies.Any()) System.Console.WriteLine("Policies: {0}", features.Policies.Select(p => p.PolicyName).Aggregate((c, n) => $"{c}, {n}"));
 System.Console.Write("Protection: ");
 var proPin = features.PinProtection.GetValueOrDefault();
 var proPass = features.PassphraseProtection.GetValueOrDefault();
 if (proPin && proPass) System.Console.WriteLine("Pin, Passphrase");
 else if (proPin && !proPass) System.Console.WriteLine("Pin ONLY");
 else if (!proPin && proPass) System.Console.WriteLine("Passphrase ONLY");
 else System.Console.WriteLine("Neither!");
 System.Console.Write("Cached: ");
 var cchPin = features.PinCached.GetValueOrDefault();
 var cchPass = features.PassphraseCached.GetValueOrDefault();
 if (cchPin && cchPass) System.Console.WriteLine("Pin, Passphrase");
 else if (cchPin && !cchPass) System.Console.WriteLine("Pin");
 else if (!cchPin && cchPass) System.Console.WriteLine("Passphrase");
 else System.Console.WriteLine("[nothing]");

 // Step 2. Have some fun with Ping!
 System.Console.WriteLine();
 System.Console.WriteLine("Pinging device... (look at it, hold the button)");
 var name = _currentUser.DisplayName; // fullname
 if (name.IndexOf(' ') != -1) name = name.Split(' ')[0].Trim(); // firstname
 var pingReply = kk.Ping($"Hello {name}! Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia quis mauris volutpat scelerisque.", true);
 System.Console.WriteLine(pingReply);

 // Step 3a. Getting the public key MIGHT require the Pin to be entered so lets define a function that allows it be entered via the console
 var pinChallengeFunction = new Func<PinMatrixRequestType?, string>(t =>
 {
 System.Console.WriteLine();
 System.Console.WriteLine("PIN CHALLENGE!!");
 System.Console.WriteLine("┌───┬───┬───┐");
 System.Console.WriteLine("│ 7 │ 8 │ 9 │");
 System.Console.WriteLine("├───┼───┼───┤");
 System.Console.WriteLine("│ 4 │ 5 │ 6 │");
 System.Console.WriteLine("├───┼───┼───┤");
 System.Console.WriteLine("│ 1 │ 2 │ 3 │");
 System.Console.WriteLine("└───┴───┴───┘");
 System.Console.WriteLine("Match the device screen with the above and enter the numbers of your scrambled pin below, press <enter> to send.");
 var pin = System.Console.ReadLine();
 System.Console.WriteLine();
 return pin;
 });

 // Step 3b. Get the public key and extract the address
 for (var acc = 0; acc < 2; acc++)
 {
 System.Console.WriteLine();
 System.Console.WriteLine("Getting addresses for Bitcoin account {0}...", acc + 1);
 System.Console.WriteLine();
 for (var adr = 0; adr < 10; adr++)
 {
 var publicKey = kk.GetPublicKey(pinChallengeFunction, $"44'/0'/{acc}'/0/{adr}");
 var extPubKey = ExtPubKey.Parse(publicKey.Xpub, Network.Main);
 var pubKey = extPubKey.PubKey;
 var address = pubKey.GetAddress(Network.Main);
 System.Console.WriteLine("Address: {0}", address);
 }
 }

 System.Console.WriteLine();
 System.Console.WriteLine("Press <enter> to quit console gracefully.");
 System.Console.ReadLine();

 kk.CloseDevice();
 }
 }

 private void KkOnConnected(object sender, EventArgs eventArgs)
 {
 System.Console.WriteLine();
 System.Console.WriteLine("KeepKey connected");
 System.Console.WriteLine();
 }

 private static void KkOnDisconnected(object sender, EventArgs eventArgs)
 {
 System.Console.WriteLine();
 System.Console.WriteLine("KeepKey disconnected.");
 }
 }
}