فَسَوْفَ تَعْلَمُونَ مَن يَأْتِيهِ عَذَابٌ يُخْزِيهِ وَيَحِلُّ عَلَيْهِ عَذَابٌ مُّقِيمٌ ٣٩
And you are going to know who will get a punishment that will disgrace him [on earth] and upon whom will descend an enduring punishment [in the Hereafter]."
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.