Japanese bank maps veins to boost user security

Japan’s third-largest bank, The Bank of Tokyo-Mitsubishi Ltd., said it would deploy a biometric security system based on vein-pattern recognition technology in branches nationwide sometime this year.

The bank will start issuing Visa credit cards with embedded integrated circuits that contain customer vein-pattern information and work with a system developed by Fujitsu Ltd. The cards will be used to confirm the identity of customers when, for example, they want to use automatic teller machines (ATMs). The bank said it would issue cards starting Oct. 12, and customers would be able to use them at 267 branches nationwide, according to a bank spokesperson, who declined to be named.

The bank did not disclose how many ATMs in each branch would be compatible with the system. The cards function as cash cards, credit cards, and as electronic money. Palm vein patterns are read whenever cardholders use ATMs or make transactions at bank counters.

The vein-pattern technology works by shining light in the near-infrared region (the infrared region closest to visible light) on customers’ palms. The palms are held about four centimetres above a scanner, which takes a snapshot of the palm, illuminating the vein patterns just below the skin. This unique pattern information becomes the basis for security applications. The information can then be loaded into a server or, as Tokyo-Mitsubishi has done, put into an integrated circuit embedded in cash or credit cards. Users who register their identities need to have their palms scanned and the data downloaded to the cards.

To identify themselves to an ATM, card carriers place their wrist on a cradle above a scanner, a small box bolted next to the machine’s input screen connected to the ATM by USB. When using the card at an ATM, the scan usually takes about a second, according to the spokesperson.

“The users’ personal identification number is still required because we wanted to make the system as secure as possible,” the spokesperson said.

This is the second major sale of the technology to a Japanese bank. The first, in June 2004, was with Suruga Bank Ltd., which has already installed a version of the system in 65 of its branches. Suruga, a regional Japanese bank, uses the system for over-the-counter transactions.

The Bank of Tokyo-Mitsubishi forecasts it will issue up to one million of the new cards each year.

The bank said it was satisfied with the security and robustness of the system after feedback from customers following a trial that used eight demonstration ATMs installed in branches in metropolitan Tokyo. The bank trialed two types of biometrics technologies, one using the vein-pattern recognition system, and the other using finger print scanners. Of 1,000 customers polled, about 90 per cent said they felt comfortable using the vein-pattern reading system, according to the bank.

In a demonstration withdrawing cash took about three to four seconds, about the same time as inserting the card and punching in a PIN.

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