I think there are two distinct issues here.

1. David is the first to report that trunk openings (and other events) occurred while the fob was located where it could not be accidentally triggered. To me, this is a very serious problem.

2. Others explain the unwanted openings as probable pocket accidents, backed by some experience. If such accidents are possible, I think that this is also a serious problem. The smart key system and remote openers were designed for convenience, but worrying about having a pocket accident that will expose your trunk to either the elements or thieves seems rather inconvenient to me. I don't want to use the manual key all the time, and I don't want to worry about storing the fob away from the danger zone of my pocket as soon as I exit the car.

Whatever the cause of unwanted openings, either accidents or some other reason -- or both, I'm counting on Toyota to solve the problem(s). Does the fob need to be redesigned? Re-engineered?