Some flows might allow only Platform authenticators (disallowing external hardware keys) https://developers.yubico.com/WebAuthn/WebAuthn_Developer_Guide/Platfo

Some flows might allow only Platform authenticators (disallowing external hardware keys) https://developers.yubico.com/WebAuthn/WebAuthn_Developer_Guide/Platform_vs_Cross-Platform.html https://developers.yubico.com/WebAuthn/WebAuthn_Developer_Gu... https://www.reddit.com/r/webauthn/comments/197ggm7/comment/ki0cxvd/ https://www.reddit.com/r/webauthn/comments/197ggm7/comment/k... The only one that I witnessed, is the optional passkey for restoring your Whatsapp account