804
United Airlines passengers to see targeted ads on seat-back screens
(www.cbsnews.com)
This is a most excellent place for technology news and articles.
You can, but I've stopped ever using them because the screen completely stops for every. Single. Announcement.
And now you can have your phone out for take off and landings, so yea no thanks I'll stick with my device that keeps working when they're making some random announcement about drinks or some shit