Automatic Packet Reporting System (APRS) is a digital communication system used primarily by amateur radio operators to share real-time information over radio frequencies. Developed by Bob Bruninga, APRS allows stations to transmit GPS location, weather data, short text messages, and telemetry. The data is sent in packet form and can be displayed on maps through radio networks and internet gateways. APRS is commonly used for tracking vehicles, emergency response coordination, and event monitoring within the Amateur Radio Service community worldwide.