The app sends your response to the server, allowing or denying access to the service.
Push notification: You install an authenticator app on a device that sends you a notification whenever there is a login attempt. Here are the current types of multi-factor authentication: Some methods are more complicated than others, and two-factor authentication requirements might differ depending on the method you use. In fact, there are multiple ways to use multi-factor authentication, some of which involve a separate offline device. Services can even “remember” the machine you’re logging in from, so the process needs to be repeated only if you access the account from a different device or location.ĭepending on the service and computer system, authentication doesn’t always work the same way. All you have to do is select “dual-factor authentication” from the menu of the website, and confirm the method you wish to use later to verify your identity. The setup is usually completed in a few clicks. The details of the process may vary, but the idea is the same - it’s a second layer of security that, even in the case of password theft or data breach, can keep unauthorized users out of your account. 
Once the login is confirmed, the login attempt is authorized.
The process is completed by either inputting an additional code that’s sent to you, or by clicking on a notification. The way 2-factor authentication works is pretty straightforward:Įach login attempt to an online service requires verification by the account owner. It is an extra security layer that many services and websites offer as an optional addition to their standard login process. Two-factor authentication is an additional password you need to enter before you can access your account.
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