It combines something you know: your user name and password, with something you have: a code that is sent to you by the service, or generated by an app. Two-factor authentication is a way of adding an extra layer of security to your accounts. Why should you use a two-factor authentication app? In this article, I’m going to explain why you should use an app like this, and I’m going to discuss three such iOS apps: Google Authenticator, Authy, and 1Password. When you set up 2FA, most services send you a code by SMS by default, but many services also allow you to use a 2FA app, which you can run on your Mac, your iOS device, or even your Apple Watch. ![]() ![]() We’ve written many times about two-factor authentication (2FA) on this blog, and why it’s essential to protect your accounts in this way. Software & Apps Two-factor authentication (2FA) apps for iOS: Which are the best?
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