The Range-r simply tells users how far away movement is occurring in a building.

Useful for a no nock entry, but not much more.

The bigger issue is the number of tactical police raids on private homes, plus some of the other technologies in development and currently available.

Stingray, which is currently in use, acts as a portable cell tower. All cell phone calls in the vicinity of a stingray unit get routed through the mobile cell tower, warrant or not.