Enrollment with fingerprint

Fingerprint enrollment is to register a fingerprint template for later recognition. A good enrollment is crucial for all reliable fingerprint recognition systems, including the iGuard.

iGuard takes advantage of the advanced DFX (Difficult Fingerprint Extraction) technology (originally developed by Bell Labs USA), which works accurately with most people's fingerprint images. iGuard can achieve an exceptionally low false-rejection-rate of less than 1 %.

However, as individuals, our hands have different levels of moisture. In some cases, iGuard may have difficulty in recognizing specific users' fingerprint images, most commonly, people with dry skin. The problem is more noticeable during the enrollment process since the sensor requires a more accurate and higher quality fingerprint image than the normal verification process. The easiest way to get around this problem is to apply a small amount of moisturizing lotion on our fingers during the enrollment process. This step is only required in the enrollment stage, and will not be needed in daily verification process.

In the case of poor fingerprint quality or dry finger, iGuard will ask you if you want to lower the matching security. A low security level will bring more convenience to the user but with a minor sacrifice of security. We recommend to choose low security only for time attendance application.

Each person must register two fingers: one as the primary and the other one as the secondary. In case when the primary finger is not suitable for verification (such as when the finger is hurt), the person can use his/her secondary finger for the authentication process.

During the process, each fingerprint image is captured three times for minutiae analysis and extraction. If the quality of any one of the three images is not good enough, you will be asked to re-capture the three images again.

It is suggested to use your two thumbs as your primary and secondary fingers. It is because your thumbs are usually bigger and can cover the scanner area better.

IMPORTANT: During the enrollment process, you must position the center of your fingerprint of your thumb to the center of the fingerprint sensor. The center of the fingerprint contains the most minutia points from which the fingerprint sensor can extract. A good fingerprint image captured during the enrollment process can significantly reduce the false-reject rate during later verification.

The following steps show you how to register the user's fingerprint template:

Description

LCD Display

  • While in standby mode, press the Func key to enter the Setup Menu. Enter the Administrator Password (default 123) and press Func key, then press 1 to select "Add /Update ID" menu. Press 1 to input fingerprint.

By Finger/Passwd (1/2)?

Enter ID # and scan 1st Finger

  • Enter the user ID # (e.g. A01). The ID can be of any length from 1 character to 8 characters.

Enter ID# A01_


  • Press the Func key to confirm the ID #. The device now begins to capture the 1st image of the primary finger. The horizontal bar on the second line indicates the quality of the image. Lift the sensor shutter with your right-hand thumb and place it firmly on the sensor until the quality bar reaches the right end. You may need to move and rotate the thumb a little bit to achieve the required quality.

Scanning 1 of 3 .....

:

:

Scanning 1 of 3 ....



  • After the quality bar reaches the right end, you will be asked to remove the finger from the sensor.

Analyzing. Pls remove finger...


  • When the device detects that you have removed the finger, it will ask you to place it back again for the 2nd image.

Press Func to scan 2 of 3


  • Press the Func key and repeat the same procedure, and you will be asked to scan the 3rd time of the same primary finger.

Press Func to scan 3 of 3


  • Press the Func key again and repeat the procedure for the third time. You will then be asked to scan the secondary finger.

Press Func to scan 2nd Finger


  • Press the Func key, and repeat the above steps to scan the left-hand thumb three times again. If all the images are OK, you will see the acknowledge message "ID: A01 Added OK!" momentary, then the device is ready for next enrollment.

ID: A01 Added OK!

:

Enter ID # and scan 1st Finger


  • Press ← to return to the standby mode.

Mon 30 Aug 12:00 ID #:_



  • In the case of dry finger (poor fingerprint image), it will warn you for dry finger. You can either wet your finger with lotion and try again, or continue.

Scanning 1 of 3 === Too Dry !===


  • If continue with dry finger, at the end, it will prompt you if you want to set security to low2. We recommend to choose low security only for time attendance application.

Set Security to Low2 Yes(1)/No(2) ?