As tempting as it might be, avoid using 0000 as your four-digit PIN code. Same goes for 1010, 1111, 1122, and 1212, which comprises the top five worst PIN codes, according to a list compiled by ...

A QR code will appear. Scan and go: Open the app, tap Add and scan the QR code. The app instantly starts showing a six-digit code that refreshes every 30 seconds. Use that code to log in. That’s it.