General Guidelines - HID Signo 25B User Manual

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The HID® Signo™ Biometric Reader 25B is capable of extracting quality features even from fingers with
poor conditions. Nevertheless, correct placement of fingers on the sensor during enrollment helps
consistency in fingerprint recognition. Adhere to the following general guidelines and Signo 25B specific
guidelines to enroll optimal fingerprint images from a user's finger to improve recognition performance.

2.1 General guidelines

Choose the ideal fingers to enroll
For correct positioning of finger on the sensor, it is recommended to use index or middle fingers.
Correct positioning of finger on sensor
Maximum contact area: Place your finger to completely cover the sensor with maximum contact
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surface.
Place on the center: Position center of fingerprint (core) on the center of the sensor.
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Hold your finger still: Once you place your finger on the sensor, hold finger still until prompted to
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remove finger.
Note: The positioning of the finger on the sensor is important. If the finger does not cover the maximum
contact area, or if the finger is not held still the enrollment will not be successful. For this reason,
this product is not recommended for use with children under the age of 12.
PLT-04900, B.1 11
HID® Signo™ Biometric Reader 25B
User Guide
March 2021