Such devices are equipped with an appropriate scanning field, to which you should put the pad of any finger of your right or left hand. The system takes a photo but it does not have to be a simple photo of such a pad and then analyzes the arrangement of characteristic points and other finger identification features. The result of this analysis is a block of data that is stored. The Biometric Access Control Systems are perfect in this case now.
Importantly, as a rule, the photo of the fingertip is not remembered. What’s more, it is not possible to restore such a photo from a saved data block. Fingerprint readers are great for verifying a person i.e. confirming the identity of a known person. In practice, it usually happens in such a way that a person gives a certain code identifying them before scanning their fingerprints. This compares the data block read from the fingerprint with one data block located in the reader’s memory or in the database.
There are some technical limitations associated with the fingerprints themselves that make the identification of a person i.e. determining who the given fingerprints belong to without giving any hint is a much more complex process. In practice, this means that this process takes longer and therefore you must use