Sure, the Life Vest App as it is can reach those who have a smartphone or a tablet.
But the same approach can be technically generalized to other digital devices (the app can be extended to computers or also adapted to the latest generation of in-flight entertainment systems).
Here's an example of a Facebook app that works on PCs and MACs.
It's about the brace position:
https://apps.facebook.com/learntobrace/ P.S: Compared to Life Vest, the FB app could be a bit scary for some users because it simulates a crash test (so it is more suited to be played at home, not on a plane
)