Editorial Note: Talk Android may contain affiliate links on some articles. If you make a purchase through these links, we will earn a commission at no extra cost to you. Learn more. QR codes are ...

First, turn on two-factor authentication for the account. You'll get a QR code or setup key. Next, open the Google Authenticator app and tap the plus sign. Record the 2FA code/key. Whenever you're ...

First invented for use in industrial applications in Japan in the early 1990s, QR codes were being widely used by consumers when smartphones with QR readers became more prevalent in the 2000s. After ...