1. Set up a bluetooth beacon in the diary aisle that broadcasts as a connectable (nor not?) device with an "SSID" (or the bluetooth equivelant) that is a known GUID
2. apps on your phone can scan for available bluetooth devices, and see the presence of the GUID, which is enough for them to know you are in the dairy aisle of Store 1234.
if that's right, does this mean disabling bluetooth, or restricting a device's access to scan for devices, will preclude this?
You don't need the Target app to be tracked by Target, since the tracking beacon code can be in any number of unrelated apps (weather, news, games, etc.)
1. Set up a bluetooth beacon in the diary aisle that broadcasts as a connectable (nor not?) device with an "SSID" (or the bluetooth equivelant) that is a known GUID
2. apps on your phone can scan for available bluetooth devices, and see the presence of the GUID, which is enough for them to know you are in the dairy aisle of Store 1234.
if that's right, does this mean disabling bluetooth, or restricting a device's access to scan for devices, will preclude this?