DAT 628 Betriebsanweisung Seite 7

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ridges. Most minutiae are found in the core points of fingerprints located
near the center on the fleshy pad of the finger.
Something we must note here is that each template is not an actual
fingerprint image. This feature not only prevents duplicate fingerprints
from being enrolled but also prevents the generation of duplicate
templates.
Below in Figure A-1 are clear depictions of minutiae. The red dots
represent core points located on your finger. A core point is the topmost
point on the innermost upward recurring ridge line.
Figure A-1
Note: If this manual is printed in black and white, a dot will be visible
within the ridges.
During the enrollment process, the user places their finger on the
A10/X628 sensor and the A10/X628 takes a picture of the user’s minutiae
points. Proprietary mathematical algorithms are used by the A10/X628
and covert the picture into a unique mathematical template. This template
is then encrypted and stored in the A10/X628 database.
Each time a user’s fingerprint is scanned, the A10/X628 searches its
database for a matching fingerprint. If the A10/X628 matches a user’s
fingerprint, their attendance is recorded in the A10/X628 audit log. This
information can be noted on subsequent reports.
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