====== What is online, or in other words, real-time tracking? ======

In the case of online tracking systems, such as Nyomkovetes.net, the central unit in the vehicle sends the position data to the central server in real time. 
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In this case, the SIM card in the device sends the data to the central server via a GPRS connection. For offline tracking systems, on the other hand, the central unit is not connected to the server. It usually collects the data on a memory card, and the vehicle operator must disassemble the GPS device each time, remove the memory card, and then use a program to upload the stored data to a mapping software. Although such devices can usually be operated without a monthly fee, they do not allow real-time tracking of the vehicle.