SecurID token code
The SecurID token code is a continuously regenerated number used to prove the user's identity.
The token code is a pseudo-random 6-8 digit number (PRN), based on the current time, that is displayed on the RSA SecurID token device. It is presumed that only an authorized user possesses the token device.
The token code is a one-time password (OTP). It is valid only while it is displayed, and it can be used only once. The token device generates a new token code at regular intervals, typically every 60 seconds. The display frequency for the token device determines the amount of time for which a token code appears before the display is refreshed.