Not only is it a serious proposal, it's been used in practice in every airport X-ray baggage scanner for decades, where it's called Threat Image Projection (TIP): https://www.xscann.com/products-HiTipPlus.html and it's actually a regulatory requirement in that context in a number of countries: https://caainternational.com/course/threat-image-projection-...
The same scanners that let handguns et al through 93% of the time, according to internal audits and journalist review?
Maybe pick a better comparison if so?
Yes, but you can require it in such a situation, as they're subordinates who have to follow policy or lose their jobs.