Two-factor authentication is a needlessly complex sounding name for a very simple way to secure your email, social media, and most other online accounts. While two-factor authentication technically means you have two layers of security protecting your account - typically, one a password, and the second is usually a one-time password (OTP). So most people who talk about two-factor authentication are usually taking about OTPs.
Once you’ve enabled this additional layer of security on your account, you’ll get an OTP via text message or an authenticator app whenever you login to your Gmail or Twitter account, for instance. This means even if someone finds out what your password is, they won’t be able to log in to your account because they won’t have access to the one-time password.
It’s always good to have an extra layer of security when it comes to online accounts. Every other day we hear about people’s accounts being hacked online and enabling two-factor authentication is one way to make things difficult for miscreants.
Not all sites support two-factor authentication, but we think you should use this security feature on every single site that supports it. Sure, it adds an extra step while you are logging in to your online accounts but remember that it’s also protecting your account.
If you don’t want to use this everywhere, we suggest that you definitely enable it on all of your email accounts. As long as your email isn’t compromised, most of your online accounts are also going to be safe. It goes without saying that you might want to avoid email providers such as Yahoo, which aren’t exactly known for providing a good level of security.
There are two primary ways to use two-factor authentication - text message or via an authenticator app. Most sites will send you OTPs via text message and that’s a perfectly good method of authentication. However if you go abroad or travel to a place with patchy or no network within your country, then you could be locked out of your account because the SMS will never arrive.
That is why we recommend using authenticator apps such as Google Authenticator, Microsoft Authenticator, or Authy or even some password managers such as 1Password. These apps show you OTPs even if the smartphone is in airplane mode. Google Authenticator is quite easy to use and the following steps will show you how to use it for Gmail. The steps are similar for other authenticator apps too.
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