I don't think a cop is going to realize or ask if there wasn't something that brought it to his attention. I am pretty confident that a wig is not on a cops mind unless he THINKS your wearing one for whatever reasons.. either a bad hair system, someones age with too thick of a density etc.. prison is another story. If i had to be in prison id rather have the hair tattoo treatment than id just have to shave lol. Thats one shitty thing about hair systems for me.. no matter how great they can look or how light.. ur never COMPLETELY free. if you go on vacation or somewhere for awhile ur always gonna have to worry about bringing glues and alcohol etc, and have to worry about putting it on alone somewhere in a shitty lit bath room.. or if its HOT and humid.. it makes putting on a system a nightmare.. so these things are far from perfect to me.