ZK S900 Guide de l'utilisateur télécharger pdf (Page 9)

S900 User Guide

All fingerprints contain a number of unique physical characteristics

called minutiae. Minutia includes certain visible aspects of fingerprints

such as ridges, ridge endings, and bifurcation (forking) of ridges. Most

of the minutiae are found in the core points of fingerprints, which are

found near the center of the fingerprint on the fleshy pad of the finger.

Figure A-1 shows the positions of core points within fingerprints. The

core points are represented by the red dots in the figure below (note: if

this manual is printed in black and white you will only see a thick dot

near the upper ridges in the figure below):

Figure A-1

A core point is defined as the topmost point on the innermost upward

recurring ridge line.

A user is considered “enrolled” in the S900 after his/her fingerprint(s) or

password has been successfully registered in the S900.

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ZK S900 Guide de l'utilisateur Page 9