CBP Biometric Technologies and Modalities — Questions and Answers
Question 1: Which biometric modality is considered the most widely used for authentication?
- Voice recognition
- Fingerprint recognition (Correct answer)
- Gait analysis
- Ear shape recognition
Correct answer: Fingerprint recognition
Fingerprint recognition is the most commonly used biometric authentication method due to its high accuracy and ease of use.
Question 2: What is the primary advantage of iris recognition compared to other biometric methods?
- Lower cost than fingerprint scanning
- Higher accuracy and resistance to spoofing (Correct answer)
- Requires physical contact for verification
- Faster processing than facial recognition
Correct answer: Higher accuracy and resistance to spoofing
Iris recognition provides high accuracy and is less prone to spoofing due to the complexity of iris patterns.
Question 3: Which biometric modality is considered non-contact and widely used for surveillance?
- Palm vein recognition
- Facial recognition (Correct answer)
- Retina scanning
- Hand geometry
Correct answer: Facial recognition
Facial recognition is a non-contact biometric method commonly used in surveillance and security applications.
Question 4: What is the key limitation of voice recognition as a biometric modality?
- Limited use in mobile devices
- Susceptible to background noise and voice changes (Correct answer)
- Requires high-resolution cameras
- Not widely used in authentication
Correct answer: Susceptible to background noise and voice changes
Voice recognition can be affected by background noise and voice changes due to illness, making it less reliable in certain environments.
Question 5: Which biometric method analyzes the blood vessel patterns in a person’s hand?
- Gait recognition
- Palm vein recognition (Correct answer)
- Retina scanning
- Facial thermography
Correct answer: Palm vein recognition
Palm vein recognition scans the blood vessel patterns in the palm, offering high security and accuracy for biometric authentication.
Question 6: What is the main challenge of using gait recognition as a biometric modality?
- Requires expensive hardware
- Can be affected by footwear and injuries (Correct answer)
- Requires physical contact
- Limited to medical applications
Correct answer: Can be affected by footwear and injuries
Gait recognition can be affected by factors such as footwear, injuries, and walking surfaces, making it less consistent.
CBP Biometric Technologies and Modalities
Which biometric modality is considered the most widely used for authentication?