Tying a password to a browser or device isn’t going to make it any easier. Use a password manager and set unique string passwords for everything. If the app supports it, use FIDO physical keys instead of Passkeys
… passkeys basically do all this without you having to know how. Your device /is/ the physical key and /you/ are the secondary auth. It honestly doesn’t get any easier for the user.
What options are there for migrating passkeys to a new device? Easy to lock you into that iPhone and you must use their migration tool when you upgrade. Or I just carry it on my keychain, no vendor lock in.
Even better would be to use certificates instead of passwords. What if every website gave you a certificate signed by them, and you store that in your password manager automatically.
Maybe that’s what passkeys are… Haven’t read up on them at all.
Basically with passkeys you have a public/private key pair that is generated for each account/each site and stored somewhere on your end somehow (on a hardware device, in a password manager, etc). When setting it up with the site you give your public key to the site so that they can recognize you in the future. When you want to prove that it’s you, the website sends you a unique challenge message and asks you to sign it (a unique message to prevent replay attacks). There’s some extra stuff in the spec regarding how the keys are stored or how the user is verified on the client side (such as having both access to the key and some kind of presence test or knowledge/biometric factor) but for the most part it’s like certificates but easier.
