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Re:Ask HN: Why is WebAuthn so slow to take off? by jameswestgate on Sunday April 23, 2023 @11:36AM (#35677140)
Passkeys are deliberately designed to avoid the issues with Bluetooth pairing. This is why a QR code needs to be scanned - devices do not need to be paired.
Re:Ask HN: Why is WebAuthn so slow to take off? by falcolas on Sunday April 23, 2023 @04:43PM (#35680407)
Not all browsers do passkeys.

When I visit https://webauthn.io/ using Chrome on my mac laptop, it pops up a bluetooth connection. Firefox asks me to connect a device or cancel.

On Windows, Chrome and Edge gives me a QR code. Firefox triggers a Windows security popup.

Inconsistency is the only constant so far.