TL;DR
Levi Maaia created NES Radar, a unique flight tracking device that turns a classic NES console into a live display of airplane traffic. By using a custom game cartridge, users can input an airport's ICAO code via the NES controller, and the system presents a radar-like view of aircraft flying within nine nautical miles of that airport. The display can show up to eight aircraft simultaneously, making it suitable for smaller airports, though busier hubs may present challenges.