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Challenge Response
In biometric identification systems, challenge/response is a method used to confirm the presence of a person by getting some form of direct response from the individual. The response gathered can be either voluntary or involuntary.
In a voluntary response, the end user will
consciously react to something that the system presents.
In an involuntary response, the end user's body automatically responds to a stimulus. A challenge response can be used to protect the system against attacks.
Index of related articles:
Automated Biometric Identification System (ABIS)
Automated Fingerprint Identification System (AFIS)
Behavioral Biometric Characteristic
Biological Biometric Characteristic
Biometrics
Biometric Data
Biometrics Algorithm
Biometric Match
Biometric Match Threshold
Biometric Sample
Biometric System
Capture
Common Biometric Exchange File Format (CBEFF)
Challenge Response
Closed-set Identification
Covert Sampling
Feature Extraction
Live Biometric Capture
Liveness Detection
Non-cooperative User
One-to-many
One-to-One
Open-set Identification
Overt Collection
Speaker Recognition
Spoofing
Template
Threshold
True Accept Rate
True Reject Rate
Uncooperative User
Verification
