What does RFID stand for?

RFID stands for Radio Frequency Identification, which is a technology that uses electromagnetic fields to automatically identify and track tags attached to objects. These tags contain electronically stored information and can be read by RFID readers, which transmit radio waves to communicate with the tags. This technology is widely used in various applications, such as inventory management, access control, and contactless payment systems.

The other options represent terms that do not accurately describe the concept or technology behind RFID. Radio Frequency Identification emphasizes the concept of using radio waves for identification processes, making it the correct choice.