Though plenty of firms (including some big ones) have been trying to commercialize consumer-facing indoor positioning technologies for years, none have succeeded on a wide scale -- which certainly seems to leave the door wide open for a system that actually works to be wildly successful, doesn't it? Rosum has been toying with the idea of using plain old TV signals to accurately locate people and objects within GPS-hating structures for years, and with today's launch of its so-called Alloy system with partner Siano, the