Re: There's one way to stop this
I would be possibly more interesting if it was possible to mandate blindness for a few weeks by whatever reversible means. If they survive that they will come out of it with a new appreciation of what it means to be able to see, if they don't, well, that too solves the issue.
Heavy offenders would have to wear the offending item up their rear end for the duration. If they bought a big laser with sharp protrusions, tough.