I used it twice yesterday (KBJC, class D airspace), actually 3x, cancelled a "practice" authorization. Downloaded the Airmap app and applied with that app, it was super easy. Both times when I got a "real" authorization it took about 60 seconds, authorization received via text. I recorded the authorization number in my logbook, I guess you could also download the authorization text and maintain it for future reference electronically. IMO I think the Feds got this one right!