Which item represents a randomly generated image used for authentication via webcam?

• A. Hand Geometry
• B. Nist
• C. Face Recognition
• D. Virtual Token

Answer: (C)

Using a webcam for authentication hinges on analyzing an image of the user's face captured in real time. This approach, known as face recognition, compares the live facial image against a stored template to verify identity. The concept often includes liveness checks to ensure the sample is from a real person and not a static photo, which fits the idea of a randomly generated or fresh image used during the process. Hand geometry, by contrast, measures the shape of the hand rather than a facial image; a virtual token is a non-biometric code or credential; and Nist refers to a standards body, not a biometric modality. Therefore, face recognition is the correct representation for authentication via a webcam.