Unfortunately no. Think of how easy it is to tear a ticket or scan an actual ticket. Then think of scanning phones and having to back in and out of each ticket on your phone. One wrong click and then it creates a delay.
At the Kickoff game, I had five tickets and with 10,000 people waiting behind you it can be a little nerve-racking. It was my first time with mobile tickets, so I accidentally backed out of the app instead of backing out of the acreen and had to get back in my app. It didn't load at first, so then I had to try again and luckily it worked. It wasn't like I held the line up for ten minutes, but getting three kids, a wife, and myself through there was way more worrisome than it ever should be.