The functioning of biometric solutions depends on people, environmental conditions, and incorrect use.

For example, the exposure of fingers to abrasive surfaces, glue, solvents, or dust constitute environmental problems that do not allow the correct functioning of an installation with fingerprints.

Furthermore, for genetic reasons, you may have difficulties in having fingerprints collected: aspects such as dry, moist fingers, or fingers previously exposed to aggressive chemical agents influence the memorization of fingerprints. There are also people who are born without fingerprints due to hereditary diseases, such as Adermatoglyphia.

It is therefore recommended to memorize not only the fingerprint but also other credentials (PIN, cards, smartphone) to be used in case the fingerprint does not work.