OK, the actual design of the thing where it just uses suction is incredibly idiotic, but the kid who got free wireless internet for months by taking its sim card - that's pretty brilliant.
But at some point a bad product has to be called a bad product. A deterrent that can't deter anyone, but does less damage than a boot, is still useless, not better.
"Your Honor, that sign on the entrance to the parking lot discussing parking restrictions and enforcement thereof somehow implied that they're giving me this device and authorization to use it how I see fit".
I suppose if someone leaves their wallet on the hood of your car while they're tying their shoelace, they've also authorized you to use their credit cards, right?