Types of Passwordless Authentication and How They Work

Passwordless Authentication

Authentication systems have evolved, and service providers now have more options of securing their databases. These systems can be simple or complex and may range from traditional passwords to multi factor authentication solution.  In pursuit of preventing system hacks and data leakages, passwordless authentication ID is going mainstream.

The critical difference between a passwordless authentication system and a traditional one is that users will not have to remember a complex password. This can reduce the risk of password leaks, phishing attacks, social engineering, and other cyberattacks. Consequently, more businesses are looking for solutions to the problem of passwords.

What is passwordless authentication?

Passwordless verification uses cryptographic keys and other confirmatory factors like keys and biometrics to verify user identities. This is a secure system that eliminates the need for users to store credentials. Instead of having to remember numerous passwords, users can use their fingerprint or other biometric characteristics to access an account. It is more user-friendly and can save time and money.

Types of passwordless authentication methods

There are various ways to implement passwordless authentication. Here are some of its forms.

  1. Possession Factor â€“ This is a type of authentication that grants access via SMS or email. One-time passcodes (OTP) are sent through these channels. An owner may respond to such notification by entering the OTP. This will automatically log the user into the platform. This login method allows users to log into a website or application anywhere.

2. Biometrics – This technology is now available on mobile devices, such as smartphones and tablets. Also known as the inherence factor, users confirm registration approval requests by confirming a face or fingerprint through a reader. This process is less complex than writing down a password and anyone can use it.

Many companies are now aware that this method can strengthen their security. Because the authentication’s basis is biological, it is difficult to hack. And by employing FIDO protocol, risks of phishing, password theft, and replay attacks are greatly reduced. 


Passwordless authentication can vary from specialized mobile applications to SMS-based logins. Each method will have a different algorithm but follow the same general rules. All these techniques aim to make the user experience straightforward while maintaining a high level of security.

Learn more about authID’s best-in-class identity solutions. Contact us at +1 (516) 274-8700.

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