What do you think about pet cameras with laser?

I definitely wouldn't use a laser doggiemommy.We used to see a man on the beach using one of these for his dog, and the dog was just chasing it all of the time,nothing seemed to distract it from it.It was a sad sight to see to be honest.Watched a pet behaviourist on t.v. trying to break the habit of a dog which had been 'trained' to chase a laser,it also chased any chink of light that came through a crack in the door,poor dog looked as though it had gone quite mad.