Enrollment data in biometric systems is typically generated from which element?

• A. Scan data
• B. Both
• C. Neither
• D. Key features

Answer: (D)

Enrollment data is the compact representation created from a captured biometric sample by extracting its distinctive characteristics and turning them into a template. The raw scan is used to derive these features, but what’s stored and used for matching is the set of key features that uniquely identify the person. That’s why the best choice is the features themselves. While some systems might keep additional data, the enrollment data’s purpose is to hold the feature-based template, not the raw scan.