This read-only value, in centimeters, reports the Horizontal Estimated Position Error for the device's current GPS fix, as calculated by the GPS satellite system. An admin uses HEPE as a single practical accuracy figure to judge how much to trust the reported horizontal position, which is important before using GPS coordinates for precise geofencing or asset-location decisions. For example, if this HEPE value is unusually high, the admin knows the current GPS fix may be off by a large margin and should wait for a better fix before relying on the coordinates for a precise location alert.