Recent advancement in Palm/Vein Biometric Authentication


From the previous articles, an idea on Palm or vein biometrics can be clearly studied. But, the major disadvantage in palm or vein biometrics is that the movement or motion of the hand may give slightly a wrong authentication. The size of the palm or vein scanner is also large when compared with the finger print biometrics, and so the finger print bio-metrics reached the skies when compared with palm/vein biometrics.

So, to overcome these disadvantages, the Fujitsu Microelectronics, a famous industry with its branches all over the world – had developed the World’s first technology  enabling biometric authentication while the palm is in motion. The new technology (introduced in this April) requires approximately only one millisecond to capture the image, and performs with the same level of accuracy in authentication as previous iterations of this technology, resulting in an extremely user-friendly palm vein authentication system in which a person’s palm needs only to be passed over a sensor for authentication.

                   Fig a- PalmSecure palm vein authentication device

The other advantage in this new release is that it is a non-contact palm vein authentication system called PalmSecure.PalmSecure holds additional promise for a wide range of various applications, for a multitude of security-focused customers.

With the old palm vein authentication technology, the individual’s palm needed to be held over the authentication sensor in order to capture an image of the palm veins. For this purpose, imaging technology is utilized which is effective to capture the pattern of palm veins even when a user’s palm is just passed over the sensor.But, the image may sometime be shaked or scattered. To resolve the aforementioned issue, Fujitsu Laboratories developed a prototype authentication device that employs a high-speed shutter to capture images of the palm veins without blurring even when the palm is in motion, in contrast to the previous version which captured images when the palm was suspended above the sensor. The new image-capturing method is comprised of the key technologies described below:

1. High-speed image-capture technology with anti-blurring – In this, the lighting controls are optimized and a high clarity picture is captured.

2. Technology that automatically extracts the best image for authentication – The new technology can automatically select the best image for authentication, from the stream of images captured by the prototype’s high-speed image-capture module. With this function, it is possible to use the same authentication software as the previous version of this palm vein authentication, while enabling – with no increase in time required for authentication – accurate authentication from the veins of a moving palm.

Fig b – Prototype of the new high-speed image-capture palm vein authentication device

Fujitsu Laboratories has confirmed that these new imaging techniques can capture images of palm vein patterns even while the hand is in motion – at approximately the same average speed as a person walks (1 meter per second) – with image quality equivalent to levels achieved with the conventional system, which required the palm to be held over the palm vein authentication sensor.

With this new feature, it is possible to authenticate an individual’s identity using palm vein authentication with the same ease as (Figure c), for example, gliding non-contact smart cards over a train-station turnstile gate, a widely-deployed technology for commuters in Japan. This new technology will make it easier to deploy easy-to-use and highly-precise palm vein authentication systems in a wide range of venues that require reliable and convenient security systems, including corporations, government offices, and hospitals.

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