The Internet Computer requires specific hardware for Internet Identity authentication and security purposes.
Users do not need to have a device with biometrics to use the Internet Identity. There should be an option to use the computer screen unlock passcode, laptop fingerprint scanner, and/or phone screen unlock, and pin code. The screen unlock feature must be active on the device for that option to be available.
Security keys that supports FIDO U2F can also be used for the Internet Identity. DFINITY does not sell these keys.