The thing I don’t understand about using my phone for identity verification at TSA is that I also need my boarding pass at TSA, which is also on my phone. I can either hand them my drivers license and scan my boarding pass in parallel (fast), hand them a paper boarding pass and maybe use the digital drivers license assuming that airport can support that (waste of paper though), or I can do both on my phone and make the entire interaction take twice as long? What’s the point, genuinely?