Bitwarden works just fine for Amazon. Works on my phone too. Even when supplying passkeys over QR code+Bluetooth to another computer, Bitwarden's Android integration works flawlessly.

I do believe you need Android 14 for that, though, so if your phone has been abandoned by its manufacturer/your ROM of choice, it'll break.

If Bitwarden is bugged out on your computer/phone for whatever reason, there are also alternatives like 1Password.

Hm I should try it again, the last time was about a year ago, maybe a little more. I don't normally use bitwarden so I have to set it all up with vaultwarden to make it work.

Is it possible now to export the passkey private key though? That was another thing at the time, apparently the fido consortium didn't want keys to be exportable.

But I'll try it again, good point. I think with paypal the issue was also that they refuse passkeys in firefox and I don't use chrome so I was stuck there too. With Amazon it tried to enroll me but I got a bunch of errors.