Hi everybody, Yesterday, on UK Discovery, there was an item in the programme Beyond 2000 about an Australian card which implements a challenge-response protocol and can be used for banking, etcetera. Basically, you give your card number (over the phone), get a challenge number, enter your pin and the challenge, and then give the response. All in CC format... They plugged it as the ultimate identity-prover, so I'm kind of interested in what's behind. Now, I know that Discovery constantly repeats old stuff, so I'm not sure whether this is actually hot/new/... Can anybody provide me with pointers to more in-depth information about this device and the algorithm(s) behind it ? Thanks -- Cees de Groot, OpenLink Software <C.deGroot@inter.NL.net> 262ui/2048: ID=4F018825 FP=5653C0DDECE4359D FFDDB8F7A7970789 [Key on servers] -- Any opinions expressed above might be mine.