That app is a real win-some-lose-some situation. When I last commuted, at peak times out of Penn Station, they would sometimes not even bother to take tickets. If I were planning on using a paper ticket, then I got a free ride and kept the ticket for next time. But if I activated the e-ticket in the app, (which I would sometimes do because it wouldn’t load until we were out of the tunnel) then I weaseled myself out of my own money.