Several models are available: USB token, FIDO U2F, Micro SD token, token with flash disc, OTP token, smartcard token, soft-token.
Software Copy Protection Dongle
Driverless USB dongles for secure software protection. A lot of APIs, tools and samples for the major program languages are available.
RS Logon 2-factor authentication for a strong Windows logon to single pc or domain or VPN, with token and PIN, the alternative solution to login with a certificate. The user password is not known.