The Google Authenticator app has undergone its first facelift since 2017, making the jump from version 5.0 to 5.10. But the visual makeover — including a much-needed adaptation to newer phones' aspect ratios — belies a major change that will make it easy for you to port your keys over to another phone.
Using app-generated one-time passcodes (OTPs) is perhaps the easiest and most cost-effective way to add a second authentication layer to all your online accounts and services. They eliminate almost any chances of an unauthorized person accessing your accounts even if they’ve got hold of your passwords. But it would be a scary situation if the passcodes within those apps were compromised, and that's just the threat Google Authenticator is facing right now thanks to some banking malware.
Twitter has supported 2-factor authentication (2FA) via authenticator apps for quite a while already, but it has always required you to add a phone number to your account for recovery and backup purposes. Since tie-ins with phone numbers tend to add an additional security risk thanks to SIM swap attacks, this wasn't the best solution for everyone, and Twitter has heard its safety-conscious users. It is now possible to secure your account with 2FA without adding a phone number at all.