distance and time is even more than distance if you listen to what scientists in the medical field say and the recommendations by the World Health Organization so time is an important parameter distance can only be approached by the signal strengths of Pluto that's the first issue the second point is that especially with the iOS operating system so with our ever iPhones bluetooth low in low energy mode cannot receive blue other Bluetooth signals in the background so the app has to be in the foreground which is then of