FYI
There is a lively thread over at Hacker News. Several of the developers claim to have experience with avionics software programming.
https://news.ycombinator.com/item?id=5531679
p.s. also a humorous sub-thread about possible TSA responses: ban Android Phones; seal them in one quart ziplock baggie; wrap them aluminum; put Hugo Teso on the no-fly list; etc..