What is the primary function of RFID technology?

The primary function of RFID (Radio Frequency Identification) technology is to transfer data for automatic identification and tracking. RFID systems utilize electromagnetic fields to automatically identify and track tags attached to objects. The system consists of a reader that emits radio waves and antennas that pick up signals from RFID tags. These tags typically contain a microchip that holds data about the object, such as its unique identifier.

When an RFID tag comes within range of a reader, the reader receives the data from the tag without any need for physical contact or a direct line of sight. This technology allows for efficient and accurate tracking of inventory, assets, and even individuals in various applications, such as retail, logistics, and security. By using RFID, organizations can streamline operations, reduce errors, and improve efficiency in managing their resources.

Other options, while related to various aspects of technology and security, do not capture the essence of what RFID is primarily designed to do. Options that suggest preventing unauthorized access, using optical methods, or encrypting sensitive information address different technology areas rather than the core functionality of RFID itself.