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The three major components of RFID (Radio Frequency Identification) hardware based on functionality include:
1. RFID Tags or Transponders: These are devices attached to objects for identification and tracking purposes. Each tag contains a unique identifier and possibly additional data. There are two main types of RFID tags: active tags, which have their own power source and can transmit data over longer distances; and passive tags, which draw power from the reader’s signal and are generally cheaper and smaller.
2. RFID Readers or Interrogators: These devices send out radio waves to detect and communicate with RFID tags. When a tag comes within range, the reader can read or write data to the tag. Readers vary in size, range, and configuration, from handheld devices to fixed readers that can cover larger areas.
3. RFID Antennas: These components facilitate the communication between RFID tags and readers. Antennas emit radio waves to activate the tag and read or write data to it. They come in various shapes and sizes, optimized for different environments and ranges. The antenna can be a separate external device connected to the reader or integrated within the reader itself.
Together, these components enable the automatic identification and tracking of objects, providing data for inventory management, access control, asset tracking, and various other applications.
D. All of the above