The application functions as a GPS tracker: it collects information about the location of the device and sends it to the server if there is an Internet connection with an interval of 5 seconds. If an Internet connection is not available, information packets are stored in the device’s memory (for 30 days) and will be transferred to the server at the time the Internet connection is first established. The application can also be used for courier delivery. Allows you to send information to the server about the number of the delivered order with reference to the current location. The order number can be entered by scanning the QR code.