What is a Passkey and How Does it Keep Your Data Secure?

In today's digital age, security of our personal data has become a paramount concern. To safeguard our sensitive information from prying eyes, passwords have long been the go-to solution. However, there is a newer and more secure way of protecting our data, and that is through the use of passkeys. In this article, we will delve into what passkeys are, how they work, and why they are a more secure option than traditional passwords.


What is a Passkey?

A passkey is a unique, cryptographic key that is used to authenticate the identity of a user. It is a long, randomly generated string of characters that is generated by a computer or other electronic device. Unlike passwords, which are typically composed of words or phrases, passkeys are much harder to guess or crack because they are entirely random.


How does a Passkey work?

Passkeys work by using a process called public key cryptography. When a user creates a passkey, the device generates a pair of keys: a public key and a private key. The public key is then shared with the service that the user is trying to access, while the private key remains on the user's device. When the user tries to log in, the service sends a challenge to the user's device, which the device then signs with the private key. The signed challenge is sent back to the service, which can then verify the user's identity using the public key. Since only the user's device has access to the private key, it is virtually impossible for someone else to log in using the user's credentials.


Advantages of Passkeys over Passwords


Increased Security

As mentioned earlier, passkeys are much harder to guess or crack than passwords because they are completely random. This makes them a more secure option for protecting sensitive information.


No Need to Remember Multiple Passwords

With passkeys, users only need to remember one key for all their logins. This eliminates the need to remember multiple passwords or write them down, which can be a security risk.


No Need to Change Passwords

Since passkeys are so secure, there is no need to change them regularly like passwords. This eliminates the hassle of having to come up with new passwords every few months.


No Need to Store Passwords on Servers

With passkeys, there is no need to store passwords on servers, which can be vulnerable to attacks. Instead, the user's private key remains on their device, making it much more difficult for hackers to gain access to their account.



Passkeys are a more secure and convenient option for protecting our sensitive information in today's digital age. By using public key cryptography, passkeys provide increased security, eliminate the need to remember multiple passwords, and eliminate the need to change passwords regularly. With the growing threat of cyberattacks, it is more important than ever to use secure authentication methods like passkeys to protect our personal data.