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4.4.5 Radio Frequency Identification (RFID)
RFID, or Radio-Frequency Identification, is a wireless communication system that
uses radio waves to transmit data, allowing you to track tags through an RFID reader.
This technology has gained significant popularity due to technological advancements
and numerous applications. This type of wireless technology relies on two
components: a tag and a receiving device or reader. The tag contains a small chip with
a unique code, and the receiving device has components to identify and process the
signal received from the tag. Tags can be either passive (without a battery, activated
by the receiving device) or active RFID tags (with a power source, continuously
sending a signal picked up by the receiving device).
RFID tags are very small but can contain a wealth of information ranging from
identification numbers to text pages. For example, a customer can use an RFID reader
to scan tagged goods to learn more about the product carrying the tag. There are
many applications that rely on RFID technology, including but not limited to:
• Access control cards for employees or vehicles.
• Identification in personal identity documents such as electronic passports.
• Tracking consumable products such as clothing and electronics (to prevent theft)

and even tracking vehicles (electronic tagging).
• Warehouse management, employee management, and product anti-

counterfeiting.
• Rapid and high-precision counting of goods and products.
• Tracking parcels and shipments.

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