I have two, hate both of them.
One of them is really bad - the lady didn't know how to operate the camera and now my face doesn't even fit in the square. I don't see any real benefit to having it - I get asked for ID like 2% of the time when I don't use a card with the pic.
The only real entertainment value is when a clerk says "I need a picture ID, please", and you say "move your thumb".