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Biometrics fail to authenticate, once again

Steve Riley points to Mythbusters' successful attempts to breach biometric security - okay, so it's not really that the door lock failed to authenticate, it's that it failed to not authenticate. Shocking in the extreme is that this test actually demonstrated that even a photocopied fingerprint can fool...

Posted to Tales from the Crypto by Alun Jones on Thu, Oct 5 2006
Filed under: Filed under: General Security, Programmer Hubris, Biometrics
Prosopagnosia - why face-based password schemes won't work for all.

I'm frequently here blogging about biometrics and accessibility - too many biometric methods get confused when you don't have the credential. Aniridia means you don't have an iris, a lack of thumbs (congenital or accident-induced) means you don't have a thumbprint. Here's another biometric that's going...

Posted to Tales from the Crypto by Alun Jones on Thu, Jun 15 2006
Filed under: Filed under: General Security, Biometrics
Security questions considered dangerous

Keith Brown expresses concern over the security questions people ask themselves for password reset, and suggests that the user not be allowed to write the question, so that sufficiently secure questions can be asked. Congratulations - you've addressed half the problem. The server can now require that...

Posted to Tales from the Crypto by Alun Jones on Wed, May 24 2006
Filed under: Filed under: General Security, Biometrics
Two-factor authentication - what's not to like?

Steve Riley always makes me think, sometimes so much that it hurts. Thanks, Steve. His latest blog posting is about two-factor authentication , and he's asking for input on what you (we) want from it. First, a couple of examples on authentication. "I am Bill Gates." - this is not authentication. It's...

Posted to Tales from the Crypto by Alun Jones on Fri, Apr 21 2006
Filed under: Filed under: General Security, Why is PKI so hard?, Biometrics
What you can do with your finger

I was reading an article just the other day about attacks on the Microsoft Fingerprint Reader, that contained the important reminder that this isn't a security device, it's a convenience device; that it should not be used as credentials for logging on to a corporate system. I've maintained on several...

Posted to Tales from the Crypto by Alun Jones on Sat, Mar 11 2006
Filed under: Filed under: General Security, Biometrics
What is a fingerprint?

Okay, so we should all be well aware as to what a fingerprint is - it's the pattern of ridges on most people's fingers that get left in smudges on glass doors. What can it be used for? The question arises as I look at my Microsoft Fingerprint Reader, and try to explain why a fingerprint reader is purposely...

Posted to Tales from the Crypto by Alun Jones on Tue, Nov 22 2005
Filed under: Filed under: General Security, Biometrics

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Browse Blog Posts by Tags

Biometrics fail to authenticate, once again

Prosopagnosia - why face-based password schemes won't work for all.

Security questions considered dangerous

Two-factor authentication - what's not to like?

What you can do with your finger

What is a fingerprint?