These days, flying means having your travel documents in order and carrying multiple forms of identification. American fliers could potentially even have to carry a passport on domestic flights if their state does not stick to the government’s Real ID timeline.
In the future, however, this kind of ID hassle could go away altogether. Fliers could leave all their IDs at home and breeze through ticketing and security. This might sound like a pipe dream, but the technology is, apparently, already available. A Dutch man actually put the ID-free idea to the test at Stockholm’s Arlanda Airport.