        Still, that wasn’t an insurmountable challenge.  He could build a Faraday cage which would probably shield the equipment.  If he bought disposable film cameras, they had no electronics to damage, and it was hard to believe that their forcefields would damage the film on a chemical level, unless they were radiating gamma rays, in which case he had much bigger problems.  These days, one probably couldn’t buy a Geiger counter without filling out a lot of paperwork, so there was no way to know unless his film was foggy when it was developed, or all his hair suddenly fell out.