IT Employment

sounds fairly hi-tek to me... I'd rather suggest SmartCards as this standard is better established and it's no really different from unlocking your door (or, closer yet, beeping your car). But yes, the BT solution is really interesting :-)

A company a while back was offering finger print and retinal scan ID to log into a system, not sure if this would be suitable however worth a look I guess. Some laptops come with thumb scanners built in so I would expect the technology was useable.