SF story idea

Ok, I first had this idea decades ago. Thought I'd bounce it off some of you folks to see what you can come up with for a few factors.

Basic idea: Someone discovers that they can teleport. It has limitations. He can go to any place he has been, no problem. Can't teleport into an occupied space. Can do stuff like teleport to the other side of a fence, or maybe into a room if he was looking thru the window. Can't use a pair of binoculars to look at a spot a long ways off and teleport there.

So. What *legal* ways can he make money with this, and note find up dead or with every government on earth trying to find a way to trap him and make him work for them?

I specified legal because the illegal ways in innumerable. Just consider the possibilities in burglary and smuggling alone.