If this has been posted before I apologies. I did search.

http://www.ccc.de/biometrie/fingerab...ml?language=en

Pretty simple method. I don't think it would fool all fingerprint scanners but certainly some.
Anyone tried it?

The link was posted on Scheier.com by AO. Anyone round here?

It was from a blog article here about finger print scanner not working in a prison.

Fingerprint scanners in a prison. Hmmm good idea not. No keys just fingerprints. Good way to get your fingers cut off. Even if the lock only works with warm fingers I don't think that would stop the prisoners trying.