Which technique uses scent detection for user identification?

• A. Access Control
• B. Security Objectives
• C. Forensics Analysis
• D. Gait Recognition

Answer: (A)

The technique being tested is using a biometric method to verify identity in order to grant access. Scent detection, or olfactory biometrics, identifies a person by their unique smell signature. In access control, the goal is to confirm who a person is before allowing entry, so incorporating scent-based identification fits the role of access control. The other options don’t describe methods used to identify a person for entry: security objectives are broad goals for protecting assets, forensics analysis focuses on investigating and analyzing evidence after an incident, and gait recognition uses walking patterns—another biometric, but not scent—rather than a scent-based identification method used to authorize access.