All of the following about RFID are true EXCEPT:

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Multiple Choice

All of the following about RFID are true EXCEPT:

In RFID systems, the tag is made up of an antenna and a small chip, but how much information sits on that tag isn’t fixed. In most practical deployments, the tag stores a unique identifier or a small amount of memory, while the detailed information about the item (like its description, price, or attributes) lives in a backend database and is retrieved by looking up that identifier. So saying the tag itself contains information about the item isn’t universally true; the tag often doesn’t hold all item data—only enough to identify it. That’s why this statement is the exception. The other statements describe common realities: a reader indeed includes a radio transmitter and receiver to talk to tags; passive RFID tags power up from the energy in the reader’s radio field rather than having their own power source, and they respond with a backscattered signal rather than emitting their own continuous transmission; and RFID memory tends to be larger than what a barcode can hold, with the ability to read through common packaging materials, though the exact read range depends on the system and conditions.

In RFID systems, the tag is made up of an antenna and a small chip, but how much information sits on that tag isn’t fixed. In most practical deployments, the tag stores a unique identifier or a small amount of memory, while the detailed information about the item (like its description, price, or attributes) lives in a backend database and is retrieved by looking up that identifier. So saying the tag itself contains information about the item isn’t universally true; the tag often doesn’t hold all item data—only enough to identify it. That’s why this statement is the exception.

The other statements describe common realities: a reader indeed includes a radio transmitter and receiver to talk to tags; passive RFID tags power up from the energy in the reader’s radio field rather than having their own power source, and they respond with a backscattered signal rather than emitting their own continuous transmission; and RFID memory tends to be larger than what a barcode can hold, with the ability to read through common packaging materials, though the exact read range depends on the system and conditions.

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