BrowserID
by stopsatgreen
HTML
<script src="https://browserid.org/include.js"></script>
<button id="login">Log in</button>
JavaScript
function logmein(e) {
e.preventDefault();
navigator.id.getVerifiedEmail(function(assertion) {
if (assertion) {
console.log(assertion);
} else {
console.log('ERROR!!!');
}
});
}
var button = document.getElementById('login');
button.addEventListener('click',logmein,false);