cheapest option available is to change the front door handle to a pad handle. about £17 , and enables the door to be kept unlocked as handle cant be turned from the outside, only the inside. have to remember to have the keys in your pocket though to get back in.. disgusting though as even if the door had been locked , they probably would have rung the bell then wedged their foot in the opening door.. hopefully the video can be used and the courts wont be so dumb as to disregard the evidence due to entrapment... you know our justice system, and thats why i prefer to get my own justice, as and when the time arises.. hope he gets his car back unmarked but probably will want to sell it.