Buzz… I pull out my phone and see my pre-boarding reminder. I click the flight number pre-authorized and -populated in my ridesharing app. A car arrives minutes later, and the next thing I know my driver has pulled onto SFO’s tarmac. Directly in front of me, I see my plane’s boarding stairs about a hundred feet away. At the bottom of the stairs, a friendly cabin crew member checks my electronic boarding pass and biometric identity.