What type of technology utilizes high-frequency radio waves to track physical objects?

The correct answer is Radio Frequency Identification (RFID) technology, which is specifically designed for tracking physical objects using high-frequency radio waves. RFID systems consist of a reader that emits radio waves and tags attached to physical items. When a tag comes within range of the reader, it responds by sending back its stored information via radio waves. This technology allows for efficient and accurate tracking of inventory, assets, and even personal items, making it particularly valuable in logistics, supply chain management, and various identification systems.

In contrast, GPS technology relies on satellite signals to determine location but does not primarily focus on tracking physical objects in a closed environment, like RFID does. Wi-Fi technology is meant for wireless networking rather than tracking, used to connect devices to the internet or each other. Near Field Communication (NFC) is a short-range communication technology, typically for transactions and data exchange, and while it operates on similar principles to RFID, it is limited to very short distances and not intended for broader object tracking.