Which device generates one-time numerical tokens for MFA?

A key fob is a device specifically designed to generate one-time numerical tokens for multi-factor authentication (MFA). These tokens are typically time-sensitive and change at regular intervals, usually every 30 seconds to a minute. Key fobs use a cryptographic algorithm to create these temporary codes, which users enter alongside their password to gain access to a system.

In the context of MFA, the function of generating one-time passcodes enhances security by ensuring that even if a password is compromised, an attacker would still need the physical key fob to gain access. This additional layer of security is essential in protecting sensitive information and systems.

While smartphone apps can also generate one-time tokens for MFA, the key fob is a dedicated device specifically designed for this purpose, often used in traditional security setups. Options like servers or cloud vendor management do not perform this function, as they are involved in broader service or administrative tasks rather than specifically generating tokens for user authentication.