Webauthn passkey support is mainstream as of Chrome 108.
How do I generate a Google passkey using my android device?
Webauthn passkey support is mainstream as of Chrome 108.
How do I generate a Google passkey using my android device?
You'll be automatically prompted to create a passkey when visiting a Webauthn site or using an app that supports it.
If you want to kick-start the process:

To test: