It's probably not the fingerprinting you're thinking of. More likely it's the Live Scan system, which is a thorough background check that touches with DOJ and

It's probably not the fingerprinting you're thinking of. More likely it's the Live Scan system, which is a thorough background check that touches with DOJ and others, etc. It does include finger/palm scanning but also much more. Think of it like a very thorough background check. If you have a criminal background, ever been in trouble, or have known criminal associates, it'll turn up on the Live Scan. So yes, the real reason is probably anti-prostitution and anti-sex trafficking - and they probably don't hide that fact I would imagine.