Authenticator

An authenticator app is a security tool that generates unique, time-limited codes for two-factor authentication (2FA) or multi-factor authentication (MFA). It is typically used in conjunction with a password to provide an additional layer of security when logging into online accounts, such as email, social media, and financial services.

The authenticator app works by using a secret key or QR code provided by the service you are trying to access. When you need to authenticate, the app generates a unique code that is synchronized with the service's servers, and this code is then used as a temporary password along with your regular password. Since the code changes frequently, usually every 30 seconds, it makes it more difficult for hackers to gain unauthorized access to your accounts, even if they have your password.

Authenticator apps are widely used because they provide an added layer of security beyond just using a password. They are convenient, as they are typically available on smartphones, and do not require an internet connection once the initial setup is completed. Authenticator apps are considered a reliable way to enhance the security of online accounts and protect against various types of cyber threats, such as phishing attacks and password breaches