Biometrics

What Factors Cause Biometric Systems to Fail?

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Biometric system performance varies according to sample quality and the environment in which the sample is being submitted. While it is not possible to definitely state if a biometric submission will be successful, it is possible to locate factors that can reduce affect system performance. 

The IBG Strike System details, technology-by-technology, aspects that work against a successful verification. Some of these strikes are listed below.

Fingerprint

• Cold finger 

• Dry/oily finger 

• High or low humidity 

• Angle of placement 

• Pressure of placement 

• Location of finger on platen (poorly placed core) 

• Cuts to fingerprint 

• Manual activity that would mar or affect fingerprints (construction, gardening) 

Voice recognition

• Cold or illness that affects voice

• Different enrollment and verification capture devices

• Different enrollment and verification environments (inside vs. outside)

• Speaking softly

• Variation in background noise

• Poor placement of microphone / capture device 

• Quality of capture device 

Iris-scan

• Too much movement of head or eye

• Glasses

• Colored contacts

Retina-scan

• Too much movement of head or eye

• Glasses

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