Re: fingerscanner for lunches, I don't think I've signed in and out for lunch since some time before christmas 2008. It's been that long since I've done a shift that doesn't require a roster adjustment, so I figure I may as well just note my meal on that and not bother signing out. Plus it means I can just start my lunch whenever I get the impulse to do so, cos I don't have to bother walking all the way out the back to sign off, and I keep wallet/phone in my pocket anyways.
So, yeah...lunch sign-ins/outs aren't that critical, in my opinion.