What is an Authenticator App and how is it useful?
The short answer is that an Authenticator App is an application that makes your account more secure.
Passwords are a poor way of protecting your online account which is not secure as you might think. This is also because most people do not have a secure password. Instead of setting secure and strong passwords, they tend to have very weak passwords that are easy to remember. In addition, the same password is used on most websites which means to remember easily. Weak passwords can be easily cracked in no time.
An Authenticator App uses two-factor authentication (2FA) to secure your online account. When you set up your account for 2FA, you will receive a secret key to enter into the authenticator app. Once set up, you have a secure connection between your account and the authenticator app. The authenticator app will generate a 6–8-digit code that is required to access your account. 
Another great feature of the Authenticator app is that it constantly generates new access codes. If others know your account and password, they will need an access code to log in to your account. 2FA system can be used in Social Media Sites and Email providers.
Like all security software, authenticator apps are imperfect. For instant, some authenticator apps still don’t require passcodes or biometric locks to log into them. In order to choose the right authenticator apps for you, you will need to know its compatibility, the platforms and devices you work on most, available account limits, multiple devices, code delivery system, SMS email or push notifications and Back up system.
