We had originally planned to go all-in on passkeys for ONCE/Campfire, and we built the early authentication system entirely around that. It was not a simple setup! Handling passkeys properly is surprisingly complicated on the backend, but we got it done. Unfortunately, the user experience kinda sucked, so we ended up ripping it all out...
Passkeys are also weirdly complex for the end user too, you can’t just share passkey between your devices like you can with a password, there’s very little to no documentation about what you do if you lose access to the passkeys too.
I think that passkeys are simple, but no-one explains what they do and don’t do in specific terms.
Someone compared it to generating private/public key pairs on each device you set up, which helps me a bit, but I recently set up a passkey on a new laptop when offered and it seemed to replace the option to use my phone as a passkey for the same site (which had worked), and was asking me to scan a QR code with my phone to set it up again.
So I don’t know what went on behind the scenes there at all.
Either you enroll a system that shares them between devices without the need for special interaction (password manager, iCloud etc) or you enroll each device separately into your account.
You can have more than one passkey for a service. This is a good thing.
You would just sign into your password manager or browser on both devices and have access to them?
Additionally, whatever app or service you’re storing them in can provide sharing features, like how Apple allows you to share them with groups or via AirDrop.
If you lose your password, there are recovery options available on almost all accounts. Nothing about passkeys means the normal account recovery processes no longer apply.
Does it work like that? Everything I see says they’re tied to that device.
Fair, I guess I’ve never lost a password because it’s just a text string in my PW manager, not some auth process that can fail if things don’t work just right.
It depends on what kind you want to use. If you want the most security, you can store them on something like a Yubikey, with it only being on that device and not exportable. If you get a new device, you’ll need to add that new device to your accounts. For less security but more convenience, you can have them stored in a password manager that can be synced to some service (self-hosted or in the cloud) or has a database file that can be copied.
That’s fair. It can be a bit of a mess with different browser, OS, and password manager support and their interactions but it has continued to get better as there is more adoption and development.