I'd like to integrate an auto-login pop-up as the one displayed in https://www.lequipe.fr
It detects your session in the browser and asks you if you want to join with your Google Account.
How can I implement this in my website? ( I already have Google Sign in ) - is using the GAPI API?
It's Google One-tap sign-up, it can be integrated using their API, follow this guide to setup Google One Tap in your website.
When you have added the Oauth2 ClientID in Google console. You would just use something like :
<!DOCTYPE html>
<html>
<head>
<script src="https://accounts.google.com/gsi/client" async defer></script>
</head>
<body>
<div id="g_id_onload"
data-client_id="XXXXXXXXXXXX-bk2lj5rs6l4c6g23nmtsfdh66qhfu921.apps.googleusercontent.com"
data-login_uri="https://localhost:3000/login"
>
</div>
</body>
</html>
and you would get :
