I happened to be playing around with Google Patents and I came across this patent for Clothing for Autistic Children: Clothing for autistic children - Brown, Michelle. If you look down the list, there are actually a bunch of patents for similar things that keep the wearer from taking off their diapers.
Interesting Patent
I think they get confused and give up, but how many serious Alzheimer’s sufferers do you think can touch their hands behind their backs?