[mrspeaker]

I don't have a deep-learning solution to the problem (I know nothing about it, that's why I clicked on it!). Seems really hard to me. I'd certainly go with an obvious "clock in and out" or "rfid" approaches... but I've worked in factories - and if you make someone wear some special clothes (or do some special tasks) when they didn't have to before - you're asking for trouble. People really hate change. That's presumably why the OP was looking for an answer for a tough problem.

A nerd analogy would be making a programmer change OSs (or even text editors) against their will: They could do it, but they won't be very happy about it.

[michaelcampbell]

"nerd", "computer guys bad at..." it feels like you have an irrational axe to grind here, when a simple solution presented causes this line of argument.