Non-writable tags (RFID)

by Vannesco Christolim NIM    : 2301900536

Data may be retrieved across vast distances using RFID (Radio-frequency identification). Companies have begun to utilize RFID in a broad variety of ways, and this has led to the creation of a competitive edge or competitive advantage for the firm that employs RFID technology. During the year 2000, the worldwide sales and usage of RFID reached $900 million (USD), and this number continued to climb until 2005, when it reached $2650 million (USD), according to Krebs’s report Non-writable tags or RFID tags are one form of RFID. Read Non-writable RFID tags only have a unique number if they cannot be written again or if they cannot be modified throughout their lifespan. RFID differs from RFID in that the ID number is only saved in the RFID TAG IC and can only be read by the RFID System (data is transferred in only one direction, from the tag to the reader).
The reader transmits an unmodulated signal to the tag in order to transfer data from the tag to the reader. The tag will read the data stored in the tag’s internal memory and adjust the antenna loading by encoding it according to the data. This information is encoded into the signal emitted by the tag. Homodyne receivers are used to modulate these signals, and the data encoded in the marks is sent as digital information. The amplitude modulation of the radio signal emitted by the reader is used to transport data from the reader to the tag. Then, the tag will receive the signal and the diode will detect it. tags and their data may be used to regulate each other, or tags can be used to store and retrieve data. It is possible to create tag detecting circuits using simple diode detectors, which take very little power. An RFID tag can only be read with CMOS logic circuits and hybrid thick films, according to Circa (1976). The use of RFID non-writable tags, such as those used in apparel retailers, is commonplace.

Companies often utilize non-writable RFID tags to gain personnel IDs, access corporate assets, and more. As a case study, Walmart employs RFID non-writable tags in its shops or outlets to track what items and products are being bought. Using RFID, Walmart’s computer network will be able to process data more quickly, such as direct data, because of the benefits of RFID. Large numbers may be scanned or recognized in a single reading. Supply chain operations, such as the FDA’s verification of prescription medicine validity, also make use of non-writable RFID tags, which help to assure safety. An RFID tag with a unique serial number will be attached to each medicine delivery under this system (unique ID). As a result of this serial number, suppliers will be able to trace and verify delivery, as well as the intended destination and arrival time of each shipment.

References:

Landt, J. (2005). The history of RFID. ,  24(4), 8–11.

Klaus. F. (2010). RFID Handbook: Fundamentals and Applications in Contactless Smart Cards.       United States: Wiley.

Weinstein, R. (2005). RFID: a technical overview and its application to the enterprise. ,  7(3), 27–33.