Very annoying issue. It has happened to me several times. My car is parked outside, so having the trunk open is a real problem. One time it opened and stayed open all night during a strong thunderstorm. The only thing that saved me was the WeatherTech trunk liner. All of the water stayed in the liner. Of course everything in the trunk was soaked.... I normally carry two other key chains in my pocket that has the SS key fob. The trunk must be coming open when I move around. I suppose I could only carry the SS keys in one pocket. I'm sure that will help, but not a good limitation to have for a fob that is not used all that much, (only to open the trunk for the most part). A more robust solution would be better. My other car in the driveway, 2006 Jaguar S-Type, never does this and it also sits in a pocket, (different from the SS), with two other key chains.... The size of the fob is similar and it also fully opens the trunk when pushed. 2006 Jaguar technology works well, 2015 GM technology not so much....