Which of the following biometric characteristics cannot be used to uniquely authenticate an individual's identity?
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A. B. C. D.D.
The following are typical biometric characteristics that are used to uniquely authenticate an individual's identity: Fingerprints - Retina scans - Iris scans - Facial scans - Palm scans - Hand geometry - Voice - Handwritten signature dynamics - Source: KRUTZ, Ronald L.
& VINES, Russel.
D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 39
And: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2002, chapter 4: Access Control (pages 127-131).
Biometric authentication is a security mechanism that uses the unique physical or behavioral characteristics of an individual to verify their identity. Among the various biometric characteristics, some can be used to authenticate an individual's identity more accurately than others.
Retina scans, iris scans, and palm scans are all examples of biometric characteristics that can be used to authenticate an individual's identity with a high degree of accuracy. These characteristics are unique to each individual and can be measured accurately using specialized equipment.
Retina scans involve shining a light into the eye and capturing an image of the retina's blood vessels, which are unique to each individual. Iris scans use a camera to capture a high-resolution image of the colored part of the eye, which has a unique pattern of lines and ridges. Palm scans capture an image of the veins under the skin on the palm, which also have a unique pattern.
Skin scans, on the other hand, are not a reliable biometric characteristic for identifying individuals. The skin's surface does not have unique patterns or features that can be used to distinguish one person from another accurately. Therefore, skin scans cannot be used to authenticate an individual's identity with a high degree of accuracy.
In summary, among the options given, skin scans cannot be used to uniquely authenticate an individual's identity, while retina scans, iris scans, and palm scans are reliable biometric characteristics that can be used for this purpose.