FIDO U2F
(Two-factor Login)
OpenPGP Card
(for SSH, Encryption)
PIV
(for TLS, SSH)
NFC USB
COTECH OpenPGP Card req. card reader
COTECH PIV Card req. card reader
Nitrokey U2F USB-A and USB-C (with adapter)
Nitrokey Start USB-A and USB-C (with adapter)
Yubikey 5 NFC USB-A and USB-C (with adapter)

Smartcards

Security Keys