Heh, I still smell that salmon here too. Could be he wants to kill a camera in is phone because something else is wrong with it a warranty doesn't cover, or, he wants to shoot out a security camera, or he is paranoid someone would hack into his phone and might see him, or, his phone is not allowed in a secure area unless the camera is permanently disable, I've seen that one.... or, a lot of reasons but I see a big fat salmon. Lately, a guy has been riding the edge on his posts, just enough to appear trollish, but not over the edge, all of us have been happy to leave him alone and let him troll, then he had to go nuts today and start using swear words and being more obvious, he couldn't take the pressure of not ruffling anyones feathers, so that's why I'm smelling salmon in the forum now, possibly from sincere posters such as this man, I don't know...
However, if I were to want to kill a camera with a laser, I'd first try it with a fairly low power 532nm laser pointer, one of those cheap 10 dollar ones from China and see if it has enough power to do so, if not... get a more powerful one and try it, but might damage the plastic inside the lens before he kills the sensor, and only a few pixels at a time, as suggested above. I don't know, but I have seen photographs of a few dead pixels in the last which were caused by a laser pointer, so not sure how easy it will be to kill a camera sensor without leaving evidence.
