You can also use ADS-B to track government planes overhead! See what neighborhoods they are spying on and where they are based! Self-adjusting tinfoil hat not include.
(ADS-B broadcasts were what caught Gov owned aircraft circling recently in Baltimore and other cities.)
Planes also broadcast air temperature, wind speed and direction along with the usual altitude, speed and position. A lot of planes are flying overhead so I thought it might be neat to combine that data, as usual a quick search turned up some researchers in NL who already thought of that a few years ago. [1]
There's a lot of data around us, and lots cool projects to collect and analyze it as well.
You can find all kinds of things in UAT. Not just weather but you can find various equipment information like the landing gear coming down, message sent from the plane (SMS, crew) and there have even been times they broadcast credit card data!
(ADS-B broadcasts were what caught Gov owned aircraft circling recently in Baltimore and other cities.)