Imagine it’s the year 2030 and you’re heading to the airport to catch a flight. At the curb, you hop onto a Segway-like scooter that will serve as your personal airport vehicle. It scans data from your phone to determine your gate number and glides in and out of massive elevator banks — no escalators — to move between check-in and security floors. Along the way, a machine scans your face to verify your identity and directs you to an individual security tunnel where you self-screen your luggage.