Hidden camera that cant view someones gear while they are on the toilet, but can see the face/etc if they are smoking.
Use it periodically, and never ever reveal that it is there. Ever. And dont be a perv about it.
Anytime a methhead etc uses in the bathroom, report to police re odd behavior, smell, etc, DUI.
That, or put in a large sign and a fake camera or device... unplugged... that states "meth/heroine detector".
That would be a lawsuit waiting to happen.
All you need is one female to stand up while she wipes and you are a convicted sex offender, broke from her lawsuit, and unemployed for violating company policy.
very bad idea.
