Exposive bolts could be RC controlled too. The race commitee could punch the sail number of OCS boats into the computer and "notify" them of thier status all at the same time! There would be no more bitching about courses or squareness of start line or anything else either.

Really though, the wording IMO is intentionally vague in order to start the process of selecting something. Let's hope it's cheaper than the center buckle of a 5-point harness used in race cares. They are around $300 a pop.