Which technology is often used in access control systems.

RFID tags are widely utilized in access control systems due to their ability to facilitate contactless entry and offer a secure way to manage access to physical locations. These tags can store information and communicate with RFID readers to verify the identity of individuals seeking entry. The technology enables efficient management of access rights and can be integrated with other systems for enhanced security monitoring.

By employing RFID in access control, organizations benefit from reduced wait times at entry points, improved tracking of personnel, and the ability to easily update or revoke access permissions. This flexibility makes RFID tags a preferred choice for many access control applications, such as in corporate offices, secure facilities, and event management, where efficient and secure access is paramount.

Other technologies listed, like analog cameras, serve different purposes primarily related to surveillance rather than access control, while telephone systems and emergency alarms function in communication and safety, respectively, but do not directly facilitate user authentication or physical entry management.