Exactly. Why not just leave an etched copy of your ignition key on the window as well? If they know what kind of alarm you have then they will be able to do their homework on how to deactivate it. The blinking red light is usually enough notice that the car is protected. Putting a sticker in the window is nothing more than free advertising for the alarm manufacturer. Its not really a theft deterrant at all.Furious94LS on Apr/05/04 said:No, don't do it. Don't advertise what system you have. Then they know what tools they need to get around that system. It's like giving them a heads up.