Most people only think about the obvious travel problems. Delayed flights, lost bags, the usual. But the stuff that actually trips people up tends to be much quieter. A glitchy Wi-Fi network, an app that refuses to open because it thinks you’re someone else, or a phone that suddenly won’t receive a security code. The sort of thing you don’t even think about until you’re standing in an airport line, sweating over a login screen that worked fine at home.
