
That “Use passkey from another device” option is basically baked into Chrome’s WebAuthn flow.
The clean fix (this is the one that works consistently):
1. Disable Chrome’s passkey UI via flags
Go here:
chrome://flags
Search for:
- Passkey
- WebAuthn
Disable anything like:
- WebAuthn UI
- WebAuthn passkey autofill
- Enable passkey account selection
- Password manager passkey UI
Set them to Disabled, then restart Chrome.

