Finger.js

Simple WebAuthn Fingerprint Auth – No Dependencies

📥 Download

⬇️ Download finger.js

🚀 How to Use

🔹 Async/Await Example

<script src="finger.js"></script>
    <script>
    async function register() {
    const id = await finger("#output").register();
    if (id) alert("✅ Registered with ID: " + id);
    }
    
    async function login() {
    const ok = await finger("#output").login();
    if (ok) alert("✅ Login successful!");
    }
    </script>

🔹 Classic Callback Example

<script src="finger.js"></script>
    <script>
    function register() {
    finger("#output").register(function(id) {
    if (id) alert("✅ Registered with ID: " + id);
    });
    }
    
    function login() {
    finger("#output").login(function(ok) {
    if (ok) alert("✅ Login OK!");
    });
    }
    </script>

🧪 Live Demo Examples

🔹 Async/Await (Modern)

// Async/Await
async function registerAsync() {
  const result = await finger("#output").register();
  if (result) alert("✅ Registered!");
}
async function loginAsync() {
  const ok = await finger("#output").login();
  if (ok) alert("✅ Login successful!");
}

🔹 Traditional Callback (Classic)

// Classic Callbacks
function registerClassic() {
  finger("#output").register(function(result) {
    if (result) alert("✅ Registered!");
  });
}
function loginClassic() {
  finger("#output").login(function(ok) {
    if (ok) alert("✅ Login OK!");
  });
}

    


    
    

      
📝 Notes