Middle of the tourist district near Fisherman’s Wharf. Cameras get stolen. When one takes pictures, have a companion or spouse take pictures of the picture taker, so you can catch the crime in the act. Better yet, take pictures simultaneously of each other. Or hide the camera and don’t draw attention to yourself. Camera thefts are happening everywhere (and a lot to news crews recently).
How about a fake camera with a timed detonator that gets activated when the camera is grabbed, by the yank on the strap? Maybe filled with a little willie-pete?
"You did erase that tape, didn't you, Clark?"