Photo by S3studio/Getty Images
Two-factor authentication (2FA) is one of the best and easiest ways to keep your online accounts secure. It works by issuing an authentication code on your phone when somebody tries to access the account; if that person doesn’t have the code, they (or you) don’t get in. By using a 2FA app, such as Google Authenticator or Authy, you can prevent somebody from accessing your data by getting your password. (You can have a code texted to you, but that is considered far less secure due to the rise of so-called SIM hacking.)
There is, of course, a catch. Because 2FA uses a key specific to your phone, if you lose or break your phone, you can’t simply reinstall the app on your new phone and go on from there. You need to transfer the key code for…
