What is the function of a security token?

A security token serves the essential function of verifying a user's electronic identity. It is often implemented as a physical device, a software application, or a part of a system that generates a unique, time-sensitive code used alongside a username and password, or it may stand alone in two-factor authentication systems.

The purpose of a security token is to enhance security by ensuring that the individual attempting to access a network or system is indeed who they claim to be. It helps prevent unauthorized access and protects sensitive information from being compromised. By confirming a user's identity through this additional layer of verification, organizations can significantly reduce the risk of security breaches.

In many cases, security tokens generate a one-time password (OTP) or cryptographic signature that changes frequently, making it difficult for malicious actors to gain access to user accounts even if they obtain the user's password. This method is widely used in various applications, including online banking, medical records management, and corporate networks, where secure access control is paramount.