We do not use an app. It’s not GPS or Bluetooth or WiFi or whatever. It’s just cell phone tower strength. We don’t know which room they’re in, but we do know, to 50-meter radius or so, the general vicinity, which district, which block they are in.
We do not use an app. It’s not GPS or Bluetooth or WiFi or whatever. It’s just cell phone tower strength. We don’t know which room they’re in, but we do know, to 50-meter radius or so, the general vicinity, which district, which block they are in.