I did point you to those Philips devices, but on second thought, I think a Java Card solution would be a much more sensible approach.
Firstly because development tools and cards are easily available and secondly because you can make actual, real working cards, unlike with other SmartCard ICs, which are only available with mask-ROM. And, since it is an open standard, there's a lot of expertise out there, including dedicated forums (fora, I know Andy ;o) ).

Regards,
Rob.