Wouldn't be really cool to be able to have some sort of integration with ADS-B IN receivers for displaying of traffic.
I'm operating in Australia where all IFR traffic has to use ADS-B out on the Extended Squitter of the Mode-S transponders.
The boys over at Oz Runways have thought of a neat and cheap 'hack' to be able to input traffic on a iPad.
Using a simple DVB antenna, and mini and super cheap Raspberry-Pi computer they've come up with a simple solution.