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by betterunix2 2889 days ago
BLE security keys also exist:

https://www.amazon.com/Feitian-MultiPass-FIDO-Security-Key/d...

SecureId is a TOTP device last time I checked, which is phishable and significantly less secure than U2F devices. The sooner TOTP is phased out the better.

If BLE and NFC are unacceptable, well, I guess you are stuck trying to use TPMs in some way to do U2F. Some phones already support something like that and I assume newer desktops and laptops will be capable of doing that some day.