Implementing Passkeys with no dependencies

Passkeys (or WebAuthn) are an amazing new technology that can be used to secure for login and registration without a password. I was very interested to understand them better so I created a demo project that logs in a user using passkeys, from scratch.

I'm using Ktor HTML to render server side HTML. I create a custom HTMX style syntax to add Passkey attributes.

0:00 - Passkeys explanation
0:40 - Demo
0:51 - Authentication explanation
4:40 - Documentation
5:25 - Server side code
8:07 - Client side code
10:19 - Fin

[nixoncode]

one time, years ago. i got drunk with my buddy and we had a conversation/argument on why we couldn't just ssh to all our accounts instead of using passwords everywhere.
we'll, now we can

[MichaelBarry-gzxl]

How do you handle multiple users on the same browser, multiple browsers on the same computer, multiple devices for the same user, forgot passkey (I.E OS reinstall) etc.

[fifty-plus]

Nice overview, I was with you until I saw a JWT.