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 ...

Eventually, you’ll see a pop-up window displaying a QR code. You will need to scan the QR code in your authenticator app to connect it to your Twitter account.

Now that the QR code is generated, keep it open and set up the two-factor authenticator on your iPhone. Once you upgrade to iOS 15, open Settings > Passwords, then confirm your identity.

Google Replacing SMS With QR Codes for Gmail Authentication Instead of receiving an SMS, a QR code will be sent to your phone to verify your Gmail account.

Can the QR code replace user names and passwords? Verizon Enterprise thinks so -- at least for some companies looking at two-factor authentication.

HomeKit HomeKit in iOS 11: Sprinklers & faucets, QR code & NFC setup, improved latency, software authentication & more Jordan Kahn | Jun 7 2017 - 10:32 am PT 0 Comments ...

SMS codes have long been less secure than other forms of authentication. With QR codes, Google aims to reduce users' dependency on carriers for account verification.

Another major reason Google is considering switching to QR code authentication is that users may not have access to their registered phone numbers when they want to log in to Gmail.