RSA SecurID
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RSA SecurID is a mechanism developed by RSA for performing two-factor authentication for a user to a network resource.
RSA SecurID token (older style, model SD600)
RSA SecurID token (model SID700)
RSA SecurID (new style, SID800 model with smartcard functionality)
Security token
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A security token is a peripheral device used to gain access to an electronically restricted resource. The token is used in addition to, or in place of, a password. Examples of security tokens include
A radio-frequency identification card used to open a door
Example of keypad issued by a bank
A disconnected token. The number must be copied into the PASSCODE field by hand.