Ok first Kub Toy, you hate to agree with me? Why is that? Is it personal or situational or something else (JK!). I would think the only useful purpose of a camera in this instance as I understand it would be for you to video tape from afar and verbaly warn the perp that he is trespassing and catch some incriminating identifier, License plate clear facial that can be ID'd, something that showed him trespassing and you doing nothing but observing. If it were me, I tend to confront trespasser which is why I don't get many. We had some folks selling frozen meat cruising our neighborhood. They would show up, say that someone had ordered the meat, but backed out and now they had to sell the meat, meaning a great deal for me. I think they were actually scoping residences in our area. They were met in at least three instances by homeowners with guns demanding they get off the property. Strangely enough they have not returned. I told them they need to leave and if they returned they would be treated as trespassers with warning.