One solution ?
Seriously,
This laser problem, with powerful kit in the hands of idiots ( terrorists is a whole different ball game ) is obviously a problem which if we - I say we as SLF / someone possibly underneath/ concerned anyway - will be lucky if there is not a serious accident before it stops.
Seems to me, while tracing gits who 've bought the things recently may be relatively easy, that doesn't really sort it; only thing I can think of is a hand-in amnesty, with a high enough reward to make it worth their while.
Might be nauseating paying the idiots, but I reckon £ will be the only thing to appeal to them - or their relatives / chums - a warning campaign would only glamourise it, bring in more berks, and worry the public.
It would be money well spent don't you think ?
This seems to apply internationally.