While I agree with Focmaester that fingerprinting will not be a 100% secure identification method, it must be said that no system is ever 100% secure.

It's all a question of using combinations of systems. For example, you could add a retinal scanner to the fingerprint. Or you could ask for a password on top of it. So not only would you need to get Proactive's fingerprints on that beerglass, but you'd also need to steal his eye and get him to give you his password.

There might also be ways to avoid the use of latex. Could a temperature sensor or such indicate the possibility that the fingerprint reader is not in direct contact with skin?

Besides, many methods will fail against social engineering ...

Anyway, security is always a complete package, not just one method.

Just my take on it ...

BrainStop