Flightradar24 has released a new GPS jamming map that displays areas of GPS interference around the world. The map uses data from aircraft ADS-B messages to calculate the level of interference, which is indicated by a color-coded overlay. The map can display data in 6-hour or 24-hour resolutions, and users can adjust the date and time to view historical data. The map is still in development, and the company plans to incorporate additional data sources in the future.