...I can imagine one or two of these thing, perhaps with the lens peeking out of a saddlebag, to catch them in the act. Of course, if you get a judge that thinks motorcycles are toys, it won't get you anywhere.
...Having said all this though, I also have to ask....if it was a Harley that was parked where you were - would they have moved it? Me thinks not. Why? Because of the general image that is portrayed of a Harley rider - tough, mean and generally not to be messed with. Beemer riders are seen as generally considerate and nice people.
Hey k_enn, do you have a link to that device? sounds interesting.
Every time i post on this subject I keep meaning to add that out of the 3 years I've been parking in this area on the street, this is the first time that anything like this has happened.
Maybe you can use one of those "look but don't touch" signs that I see when I go to car shows. :)