A YubiKey is a one time password generator. Produced by Yubi Corporation they are recognized as one of the most secure ‘two factor’ authorization devices available.
A YubiKey is a flat plastic USB device, that has a button on top. Formever Directors can have a yubi key registered on their Director form. When that Director logs in the key has to be inserted and the button pushed. When the button is pushed the key generates a one time password and Formever checks it against Yubi Corporation’s servers to ensure that is is valid.