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Biometric Enrolment Manual
descriptionOverview descriptionFacial image capture descriptionFingerprints Capture descriptionIris Capture
Home keyboard_arrow_right Biometric Enrolment Manual keyboard_arrow_right Fingerprints Capture

Fingerprints Capture

The lines that you see along each of your fingers, caused by raised areas of the skin, can leave their impressions on certain types of surfaces. Such an impression is called a fingerprint.

Fingerprint Scanner

At the enrolment station the fingerprints are captured through digital slap Fingerprint Scanner which is connected to a laptop/desktop computer through the USB port. It comprises of a flat glass plate known as platen which helps to capture the fingerprints when fingers are placed on it while the indicators guide the user to keep the fingers in proper place. In case of Slap Fingerprint Scanner, all the four fingers of the hand are captured, at a time. The fingerprints of both the thumbs are then captured, simultaneously.

Steps to Capture Image of Fingerprint

The Enrolment Operator should obtain the fingerprints of all five fingers of each hand i.e., ten fingers of two hands. There are certain procedures which need to be followed if the person has more or less than ten fingers.

The following steps illustrate how to capture the fingerprint image of the Enrollee (Resident):

Left Hand Fingerprint: Firstly, the fingerprints of the four fingers of the left hand except the thumb are captured simultaneously. The fingers to be scanned are illustrated in the The Operator would ask the Enrollee to place the four fingers of the left hand on the platen and to apply some pressure with the right hand to have good contact with the surface.

Right Hand Fingerprint: Secondly, the fingerprints of the four fingers of the right hand except the thumb are captured simultaneously. The fingers to be scanned are illustrated in the following Figure 10. Then the Operator would ask the Enrollee to place the four fingers of the right hand on the platen and to apply some pressure with the left hand to have good contact with the surface.

Two Thumb Prints: Thumbprints of both the hands are captured simultaneously. The thumbs are scanned as illustrated in the following Figure12.The Operator asks the Enrollee to place the thumbs of both the hands on the platen and to apply some amount of pressure to have good contact with the surface.

The Operator must ensure that the Enrollee uses  the maximum area of the surface to get a proper scanned fingerprint image. 

Guidelines for Fingerprint Scanning

  1. If the image of fingerprints for an Enrollee is not proper in spite of repeated attempts, the Operator should ask the Enrollee to wash his/her hands. The Operator can provide a wet sponge or towel available at the Centre.
  2. The Operator must demonstrate the way to place the fingers on the platen but he should not touch the Enrollee while demonstrating the process. The following Figure 13demonstrates the procedure.