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----- Original Message -----
From: M.O.M. <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, January 06, 2001 2:35 AM
Subject: Gummi bears
>
> Gummi bears defeat fingerprint sensors
> By John Leyden
> 16 May 2002 at 12:29 GMT
>
> A Japanese cryptographer has demonstrated how fingerprint recognition
> devices can be fooled using a combination of low
> cunning, cheap kitchen supplies and a digital camera.
>
> First Tsutomu Matsumoto used gelatine (as found in Gummi Bears and other
> sweets) and a plastic mould to create a fake
> finger, which he found fooled fingerprint detectors four times out of
> five.
>
> Flushed with his success, he took latent fingerprints from a glass,
> which he enhanced with a cyanoacrylate adhesive (super-glue
> fumes) and photographed with a digital camera. Using PhotoShop, he
> improved the contrast of the image and printed the
> fingerprint onto a transparency sheet.
>
> Here comes the clever bit.
>
> Matsumoto took a photo-sensitive printed-circuit board (which can be
> found in many electronic hobby shops) and used the
> fingerprint transparency to etch the fingerprint into the copper.
>
> From this he made a gelatine finger using the print on the PCB, using
> the same process as before. Again this fooled fingerprint
> detectors about 80 per cent of the time.
>
> Fingerprint biometric devices, which attempt to identify people on the
> basis of their fingerprint, are touted as highly secure and
> almost impossible to fool but Matsumoto's work calls this comforting
> notion into question. The equipment he used is neither
> particularly hi-tech, nor expensive and if Matsumoto can pull off the
> trick what would corporate espionage boffins be capable
> of?
>
> Matsumoto tried these attacks against eleven commercially available
> fingerprint biometric systems, and was able to reliably fool
> all of them.
>
> Noted cryptographer Bruce Schneier, the founder and CTO of Counterpane
> Internet Security, described Matsumoto's work
> as more than impressive.
>
> "The results are enough to scrap the systems completely, and to send the
> various fingerprint biometric companies packing," said
> Schneier in yesterday's edition of his Crypto-Gram newsletter, which
> first publicised the issue.
>
> http://www.theregister.co.uk/content/55/25300.html
>
> ***** The actual research paper:
>
> Impact of Artificial "Gummy" Fingers on Fingerprint Systems
>
> Tsutomu Matsumoto
> Hiroyuki Matsumoto
> Koji Yamada
> Satoshi Hoshino
>
> Graduate School of Environment and Information Sciences
> Yokohama National University
> Prepared for Proceedings of SPIE Vol. #4677,
> Optical Security and Counterfeit Deterrence Techniques IV,
> Thursday-Friday 24-25 January 2002
>
> See: http://cryptome.org/gummy.htm
>
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