Boarding passes

Simple and stupid thing today: boarding passes.I'm flying to our office in Irvine for a week to do some knowledge transferring next week -- transfer in for this instance.Checking in to Alaska Airlines I had a choice to send my boarding pass not just to my printer but also to Passbook on my phone. I have to say that if this really works, which I'm expecting it to, I'll be happy. One less thing to wrangle in the getting through the security theater that is the airport check-in system.But yes, I'll have the paper version of the boarding pass with me as well. I don't trust the system.