إِلَّا مَنِ ٱرْتَضَىٰ مِن رَّسُولٍ فَإِنَّهُۥ يَسْلُكُ مِنۢ بَيْنِ يَدَيْهِ وَمِنْ خَلْفِهِۦ رَصَدًا ٢٧
Except whom He has approved of messengers, and indeed, He sends before him [i.e., each messenger] and behind him observers
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.