Private aircraft provide transportation to interesting people: corporate officers, business owners, celebrities, high net-worth individuals, etc.
In recent years, sites like FlightAware have made it trivial to access all public flight plans. However, aircraft owners can opt into a block list (the BARR) that prevents their flight information from being made public. All the interesting people are on the BARR.
We’ll explain the basics of how the the ATC system and sites like FlightAware work, demonstrate a serious, unpatchable method for tracking otherwise “untrackable”, BARRed aircraft, and demo our site that lets you do the same.