In the context of access control systems, what is the role of a "reader"?

In access control systems, the role of a "reader" is primarily to grant or deny physical access to authorized individuals. A reader is a device that can detect, interpret, and process access credentials, such as key cards, biometrics, or mobile devices. When a user presents their credential to the reader, it verifies the information against a stored database of authorized users. Based on this verification, the reader then sends a signal to the locking mechanism to either unlock the door for access or keep it locked to deny entry.

The critical function of a reader is its real-time decision-making capability, which is essential for securing premises and controlling access to restricted areas. It plays a vital role in enhancing security measures by ensuring that only individuals with the right authorization can gain entry.

While readers may interact with systems that collect access event data or store user credentials, their primary responsibility is not these tasks but rather the immediate action of granting or denying access based on the presented credentials.