Probably OT, but at the Livermore flea market Sunday, somebody was dumping some Trimble gear that use blue tooth as an interface. Once of the repair tickets complained the unit only had a mile range. [Way beyond what I ever thought was allowed with blue tooth.]I didn't bother to write down the product number. I poked around the trimble website and didn't see a similar device. The units I saw reminded me of the top of a parking meter, i.e. half round, and I think it plugged into something else. Bay Area locals may see these appear at the DeAnza flea market on Saturday.