وَسَوَآءٌ عَلَيْهِمْ ءَأَنذَرْتَهُمْ أَمْ لَمْ تُنذِرْهُمْ لَا يُؤْمِنُونَ ١٠
And it is all the same for them whether you warn them or do not warn them - they will not believe.
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.