David-Link DL=A Manuel d'utilisateur télécharger pdf (Page 6)

• FRR: ≤ 1%

• FAR: ≤ 0.0001%

• Communication: TCP/IP, RS485, USB

• USB Thumb Drive Download Function

• Lock Output: NO/NC

• Access Control Interface: Wiegand 26/34

• DC/Current: 12V/1A

2. Basic concepts

2.1 Basic concepts

This section contains definitions and descriptions of David-Link Biometric Fingerprint Access Control

concepts including:

• User Enrollment

• User Verification

• Match Threshold Levels

• User ID Numbers

• Authority (Status) Levels

2.1.1 User Enrollment

During user verification, live fingerprint scan is compared with the matching stored fingerprint

template to confirm user’s identity. Each enrollment process takes less than 1 second. All ten

fingers can be enrolled and assigned to the same ID number or the same user.

Ideally, one finger from each hand should be enrolled so that in case one finger is injured, the

alternate finger can still be verified. It is recommended to enroll the left and right index fingers

for enrollment.

2.1.2 User Verification

Verification process starts when a user enters an ID number, places a finger on the

fingerprint sensor, or inputs a password combination for comparison with the stored

template.

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David-Link DL=A Manuel d'utilisateur Page 6