One scam app even captures your QR codes. You don’t have to look very hard for it: The developer took out an App Store ad, which means it is prominently shown when you search for authenticator apps.

The alternative is an authenticator app, and one of the most popular of those comes from Google. ... (or similar apps like Authy) will have an option to scan the QR code when setting up 2FA.

All you have to do is scan a QR code for the service you want to turn 2FA on for, and the app will generate a new log-in code around every 30 seconds. This week, Google has given its 2FA app ...

This usually generates a QR code, which you can then scan using the Microsoft Authenticator app. Now that you have your accounts set up, you'll be prompted to enter a six-digit code the next time ...

The Add Account button is clearly marked in the app, and from there you can quickly scan a QR code to input a new site. You’re also presented with a lengthy list of sites that support 2FA ...

When you see a QR code on the laptop screen, open the Google Authenticator app on your phone. Tap the plus sign in the bottom-right corner of the app and then Scan a QR code.Decide whether you ...