Abstract: A machine or group of machines for monitoring location of at least one of a vehicle or freight carried by the vehicle includes a server comprising a central processing unit, a memory, a clock, and a server communication transceiver that receives location information of a mobile device, the mobile device comprising a GPS receiver, a microprocessor and a wireless communication transceiver coupled to the GPS receiver, the mobile device comprising the GPS receiver programmed to receive data sent by a plurality of GPS satellites, calculate location information of the mobile device comprising the GPS receiver and transmit the location information.