Which of the following is an example of a dynamic token?

A dynamic token refers to a security measure that produces a unique and temporary code that changes frequently, usually on a time-based or event-based schedule.

The time-based one-time password (TOTP) is a perfect example of a dynamic token because it generates a unique password that is valid only for a short period, typically 30 seconds. This means that even if someone were to intercept the password, it would become useless once it expires, thereby enhancing security. This method is commonly used in two-factor authentication systems to ensure that even if a static password is compromised, the dynamic nature of the TOTP adds an extra layer of security.

In contrast, a smart card and a USB token are examples of static tokens. They are physical devices that store credentials and do not generate a changing code. A fingerprint scanner, being a biometric device, is used for identification but does not create a dynamic code. Understanding the characteristics and functions of different types of tokens is essential in the context of identity and access management, as it helps in determining the most effective authentication methods for securing systems and data.