Compatibles Software & Hardware Tokens OpenOTP Security Suite Compatible Tokens Software & Hardware Tokens We cover all your needs Software Tokens Discover Hardware Tokens Discover Choose the method that best suits you Authentication Methods Strong Authentication login technologies supported by OpenOTP Security Suite Mobile Push Accept / Deny an Authentication Request Voice Biometric Human Voice Authentication PKI User Certificate-based Authentication Software Tokens OATH, Event, Time & Challenge-based, Mobile-OTP (mOTP) Signed Authentication FIDO2 - Public-key Cryptography Authentication Hardware Tokens OATH, Event, Time & Challenge based Yubikey Tokens Multi-protocol YubiKey Standard & Nano Legacy Methods Printed OATH One-Time Password Lists Mailbox: Mail & Secure Mail OTP Mobile Phone: SMS OTP