- Why does the circle make it harder to see at a glance? This doesn't seem to be true at all.
- If you can't stop someone, you're not going to be able to read the number on the badge. I don't see any reason why your employee number should be on the front. It definitely doesn't enhance security at all. People faking badges can fake numbers too.
- I'm not sure about your points re: cost or smaller employers, I mean, sure, but I can't imagine that cost would be a huge barrier - more likely changing out equipment would be.
- Badget photo backgrounds probably need to be plain, but as long as it's a photo you can be reasonably recognised from, I'm not sure what it matters. Simply by growing a beard you can become pretty hard to recognise from your badge photo from 5 years ago.
- I agree that the employment classification is probably good to have on the badge, but only because of annoying BigCo obsession about it. In practice, I'm not sure why it would matter much. When I worked at a big company it was just a political tool to remind consultants they were inferior.