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How does FIDO2 authentication over BLE transport work in Firefox

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I am trying to understand how password less authentication with a FIDO2 security token works in Firefox over BLE transport.

Firefox uses authenticator-rs as Webauthn library which only supports USB-HID transport.

I am able to use a BLE security token to login to my google account however. How does that work if Firefox does not support that transport protocol?

Any help or direction to documentation on this topic is appreciated. So far I was not able to find an explanation for this online.

I am trying to understand how password less authentication with a FIDO2 security token works in Firefox over BLE transport. Firefox uses authenticator-rs as Webauthn library which only supports USB-HID transport. I am able to use a BLE security token to login to my google account however. How does that work if Firefox does not support that transport protocol? Any help or direction to documentation on this topic is appreciated. So far I was not able to find an explanation for this online.

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