According to CNN, soon you’ll be able to go through the check-in line without paper ID and pass, then board your flight with no hassle. Your face will be pre-scanned as a permanent on-line ID by computer. 

Meanwhile, until that futuristic miracle happens, make boarding flights as hassle-free as possible. Have all the necessary documents ready to show at check-in. And don’t try to go aboard with an emotional support squirrel.