SmsLoc — Open Source Navigation App

SmsLoc is an application that queries the location of contacts without the use of mobile data. It uses GPS to retrieve current position and SMS for requests/responses. SMS request format: `Loc?` SMS response format: `Loc:LAT,LON,ASL,UTC_S,V_KMH,ACC_M,BAT_PCT`, where: - `LAT, LON` are latitude and longitude in degrees rounded up to 4 decimal places.[^1] - `ASL` or Above Sea Level is the absolute altitude as reported by the GPS in meters - `UTC_S` is the timestamp of the GPS fix in seconds. The timestamp corresponds to the time of the actual fix, and not when SMS was received. - `V_KMH` is the speed in kilometers/hour - `ACC_M` is the accuracy reported by the GPS chip in meters - `BAT_PCT` is the battery percentage of the device sending the response