Capturing Image of Fingerprint with Biometric Sensor

Capturing Image of Fingerprint with Biometric Sensor:

We are using Biometric technology in many of our day to authentication systems. In this article I have considered that reader is familiar with biometric technology, so I am not explaining basics of biometrics.

In this article we are going to discuss how capture and save IMAGE of fingerprint using fingerprint scanner, in biometric attendance system or biometric access control system which you have been using for day to day authentication purpose. For that fist of all we will see how your biometric fingerprint based attendance system authenticate your fingerprint. You might remember first day when you started using biometric attendance system. At that day your admin or anyone who looks after to this system had taken fingerprint samples of yours. This process is registration of fingerprint in device. that was registration process. By which image of fingerprint (fingerprint template) was scanned and stored in memory of your attendance system. Later on whenever you place your finger on that scanner system compares it with all templates which are stored inside. If it matches with any one which is already stored success record will be generated and stored in non volatile memory of system. which is simply your attendance record for that date. At this point you may think, it’s very simple download template from attendance device and save it to PC. But it’s not that simple. Reason behind that is, your attendance device don’t compare images it compare some numerical codes which represents your fingerprint template. As it consumes more memory and more CPU resource, attendance devices doesn’t stores images of fingerprint but they generate unique numerical code for every image they capture. And compare those codes for faster authentication. Now we come to point”how to save image of fingerprint then?” Most of the devices support image capturing function. To use that function you need a simple tool which may be available in downloads section of your device vendor. Or you have to search for it on manufactures website. Other way to capture and save template is you can go for low cost USB fingerprint scanner which directly saves images on computer which it’s connected to in BMP or JPEG format. You may ask me for support I have got ready tools for same purpose. You need to know manufacturer and model number of your device.

List of some Attendance Devices for you reference:

http://www.attendanceindia.com/

You may find USB Fingerprint Reader:

http://www.attendanceindia.com/Fingerprint%20scanner_fingerprint%20sensor_pune_for_collages.html

Rohan Joshi