[11701] in cryptography@c2.net mail archive
unforgeable optical tokens?
daemon@ATHENA.MIT.EDU (Perry E. Metzger)
Fri Sep 20 12:09:48 2002
To: cryptography@wasabisystems.com
From: "Perry E. Metzger" <perry@piermont.com>
Date: 20 Sep 2002 12:07:38 -0400
A couple of places have reported on this:
http://www.nature.com/nsu/020916/020916-15.html
An idea from some folks at MIT apparently where a physical token
consisting of a bunch of spheres embedded in epoxy is used as an
access device by shining a laser through it.
On the surface, this seems as silly as biometric authentication -- you
can simply forge what the sensor is expecting even if you can't forge
the token. Does anyone know any details about it?
--
Perry E. Metzger perry@piermont.com
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