How does a SecurID token function in multi-factor authentication?

A SecurID token functions in multi-factor authentication by providing a time-sensitive numeric code along with a personal identification number (PIN). This method enhances security by combining something the user knows (the PIN) and something the user possesses (the SecurID token), which generates a one-time password that changes at regular intervals.

This approach adds an additional layer of protection since even if someone were to steal the user's credentials, they would still need the SecurID token and the correct PIN to gain access. This dynamic, time-sensitive code means that it cannot be reused, making unauthorized access significantly more difficult. The requirement for both the token-generated code and the user's knowledge of their PIN exemplifies the core principle of multi-factor authentication by utilizing multiple verification methods to strengthen security.