What is the difference between these two TPMS systems.

Does anyone have any direct knowledge of a TPMS sensor theft? I've never heard of one, but I suppose it could happen. None of the so called "security" measures are actually very secure. Allen wrenches are common tools of course, and a crowfoot socket easily replaces the TST "special" tool, but the rotating cover cap sensors can also be removed simply by squeezing the cap with pliers. Personally, I prefer making the sensors less noticeable as a deterrent as well as for the ease of airing up.