But we would not recommend doing that for external user logins just yet. In theory, or in a controlled environment, yes.

‍ Is it possible to build a login just with passkeys? But it is expected that Apple will open the passkey API soon™ so that other applications than Safari (e.g., Chrome, Firefox, native Mac apps) can also access the “Apple platform authenticator” and the passkey sync fabric that Safari currently uses. Chrome for Mac also supports passkeys, but those are still “single-device passkeys”, meaning they only work on the device where they’ve been created. There’s one detail to be aware of: passkey sync is currently only available when using Safari. MacBooks with macOS Ventura, Monterey, and Big Sur.Here’s a list of devices where you can expect passkeys to fully work and that also support synchronization through iCloud Keychain, meaning a passkey created on any device is immediately available on all devices signed in to the same iCloud account: The latest Safari update even brings passkey support to older MacBooks. With iOS16 and macOS Ventura already released to billions of Apple devices, users on latest Apple hardware can fully benefit from the password successor and sign up to your app or website with just a passkey, i.e., their face, fingerprint, or device PIN. We’ll lay out what to expect from passkeys today, and what to expect from them over the coming months. If you’re running a website or app, be it with an existing user base or just starting, you may be wondering: are passkeys for me? Is this something I should think about, let alone spend time on to plan and implement support for my project? Then this article is for you.

We've written about passkeys here and we also run passkeys.io, an info page with a passkey-first account demo. Passkeys are a new authentication standard, created to replace passwords. All this resulted in quite some buzz around the new authentication technology in the past few weeks.

Right before that, travel specialist was the first major website to launch their passkey implementation to their website and their iOS app. Following recent passkey announcements from Apple and Google, payment app PayPal issued a press release that they are shipping passkey support gradually to their user base worldwide. You may have read about passkeys and their capabilities to replace passwords.

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