Most fingerprint recognition software allows to enroll multiple fingers which avoids that an individual is no longer granted access after injury. Only very few people miss all 10 fingers. How suitable is fingerprint recognition as a biometric solution? We use the following 7 criteria to evaluate the suitability of fingerprint recognition: Universality
All other types of fingerprint readers acquire an image of the outer surface, thus requiring hands to be cleaned and free of scars before read-out.
They read the fingerprint on the dermal skin layer, which eliminates the need for a clean, unscarred surface.
Disadvantages are that readings are impacted by dirty or marked fingers, and this type of fingerprint reader is easier to fool than others. Advantages are that optical readers start at very cheap prices. The type of sensor in an optical reader is a digital camera that acquires a visual image of the fingerprint.
With a loop the ridge enters one side of the finger, then forms a curve, and exits on the same side of the finger from which it entered. An arch is a pattern where the ridge enters one side of the finger, then rises in the center forming an arch, and exits on the other side of the finger. The three basic patterns of fingerprint ridges are the arch, the loop, and the whorl. Whorl pattern (all 3 pictures in public domain) Fingerprint patterns Basic patterns