United Airlines is the first U.S. carrier allowing you to scan your passport so you can check in for your international flight using just your mobile phone.
Much like making a mobile deposit with your bank, United's mobile app now lets you use your cellphone camera to take a snapshot of your passport.
United has hired a third party called Jumio to collect all that vital data, which is what seems to have some concerned. Jumio says it takes particular pride in securing your passport data.
If you decide to use united mobile's app, you're able to scan your passport 24 hours before your departure. Once your passport scan is verified, you get your boarding pass.
But don't think you can just leave your passport home. The friendly skies are not that friendly. You'll still have to show your physical passport at the airport to make sure you are who you say you are -- a whole other security concern.