unforgeable optical tokens?
Perry E. Metzger
perry at piermont.com
Fri Sep 20 12:07:38 EDT 2002
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 at piermont.com
---------------------------------------------------------------------
The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to majordomo at wasabisystems.com
More information about the cryptography
mailing list