Which of the following are examples of biometric devices? Choose 2.

Iris scanners and voice recognition systems are both considered biometric devices because they identify and authenticate individuals based on unique biological characteristics.

An iris scanner analyzes the distinct patterns in the colored ring of the eye (the iris), which are unique to each person, making it a highly reliable method of biometric authentication. Similarly, voice recognition identifies individuals by their unique vocal characteristics and speech patterns, allowing systems to confirm identity based on voice alone.

Both methods utilize physiological traits for identification, which is the core function of biometric devices. In contrast, the other options include devices and methods that do not fit the definition of biometrics, such as key fobs, which are tokens for security access, and passwords, which are knowledge-based authentication methods.