What is Passwordless Authentication?

An authentication method known as “passwordless authentication” does not need the use of a password under any circumstances. It is impossible to utilise passwords as an additional authentication mechanism, and they are not even used as a backup. Passwords are not utilised as a method of authentication even though outmoded systems such as Microsoft Active Directory call for their use. In addition, passwords are not saved in a secure location such as a vault or manager.

You must grasp this concept, as some suppliers of technological solutions advertise their authentication services as being password-free when in reality, they are not. Because they continue to utilise passwords as a backup method, anybody can use that password to get access, and you are still susceptible to assaults that are password-based.

A user’s identity can be verified through the use of a method known as passwordless authentication, which does not need the use of a password. Instead of using passwords, password-free systems rely on other, more secure authentication methods, such as:

  • EKG
  • Voiceprint
  • Retinal scan
  • Facial recognition
  • Fingerprint scan

For a very long time, passwords have not provided any security. They are difficult to remember, and it is simple to lose track of them. They are also the primary focus of the attacks carried out by cybercriminals. To such an extent that 81% of breaches include either weak or stolen passwords.

Advantages of Passwordless Authentication

  • User Experience (UX)

Because users no longer need to learn any secrets, the authentication process may be streamlined thanks to passwordless authentication.

  • Increased Sense of Safety

The fact that users can reuse passwords and have the capacity to share them with other people makes user-controlled passwords a significant security risk. Passwords are the root cause of other assaults, including credential stuffing, corporate account takeover (CATO), password spraying, and brute force attacks.

  • Reduction in the Object’s Overall Acquisition Cost (TCO)

Eliminating passwords would minimise the number of support requests that need to be sent, allowing IT to focus more on solving actual issues. Passwords are costly, and they require ongoing maintenance from IT staff.

  • IT Acquires Both Command and Visibility

When depending on passwords, frequent problems such as phishing, reuse, and sharing might arise; however, when using passwordless authentication, information technology can regain its objective of having total visibility over identity and access management – because there is nothing to phish, distribute, or reuse, the user is no longer the organisation’s wild card in terms of the identification system.

How does Passwordless Authentication Work?

The use of alternative authentication elements, which are inherently more secure than passwords, is required for passwordless authentication to function properly. When using authentication based on a password, a password supplied by the user is compared to the passwords already recorded in the database.

The comparison is carried out in a way analogous to that described above in certain password-free systems, such as biometrics; however, in place of passwords, the specific traits of the user are compared. Example: A system takes a picture of the user’s face, analyses it to extract numerical data, and then checks that data against the confirmed information already stored in the database.

Comparisons could take place differently in many other implementations. For example, a system may transmit a one-time passcode to a user’s mobile device as a text message. The user obtains it and then inputs it into the appropriate field on the login screen. The system then contrasts the passcode that the user provided with the one that it had previously transmitted.

Using a cryptographic key pair consisting of a private and a public key is fundamental to both passwordless authentication and digital certificates, which are based on the same fundamentals. However, they are both referred to as keys, the public key functions more like a padlock, while the private key functions more like the key that opens the lock.

There is only one key for the padlock, and there is only one padlock for the key when it comes to digital certificates. This is how the system works. Users who want to make their accounts more secure can use a tool to establish a pair of public and private keys. This tool could be a mobile app, a browser plugin, or something else.

An authentication factor, such as a fingerprint, PIN, or one-time password, is required to access the private key, which is kept on the user’s local device and can only be accessed with that factor’s help. The user must supply the system with their public key to honour their request for a secure account.


Passwords are still used all around the world, even though their use is far more uncommon than it was in years past. The fundamental reason for this is that a login system that requires a password is the simplest and least expensive to put into place. On the other hand, we anticipate that password-free systems will soon dominate.

Passwords are an annoyance for users, which brings us to our final point. It’s difficult to remember, and it’s a hassle to reset. On the other hand, password-less authentication methods that do not require a password, such as biometrics, offer users a higher level of convenience and friendliness.

When referring to authentication methods, passwordless authentication refers to those that do not need the user to provide a password or answer security questions to access an application or IT system. An alternative piece of proof, such as fingerprints, proximity sensor, or code for a hardware token, is presented in its place by the user.

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Is it possible to exploit passwordless systems?

No authentication solution is currently available that is immune to being hacked. Even if there may not be any obvious method to hack it, this does not mean that even the most skilled hackers will not be able to find a way to get beyond its defences. In light of this, methods that do not require a password are fundamentally more secure than passwords.

Which of the following is an example of authentication that does not require a password?

Passwordless authentication for logged-in users can be email-based, SMS-based, multi-factor, biometric, or traditional passwords. The usage of a magic link or a one-time code is required to validate a user while authenticating over email.

What are the advantages of doing away with passwords altogether?

Phishing and brute force assaults are two of the most hazardous and widespread cyberattacks. Passwordless authentication eliminates the need for users to have a password completely, providing instant security against these threats.