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Rfid: A Future Potential Technology Essay

2920 words - 12 pages

Abstract: Radio Frequency Identification (RFID) technology uses radio frequency to track or detect objects using tags and readers. This is similar to the barcode detection but barcode detection requires the object to be in the line of sight. Due to the wireless nature of RFID, we find its use in various applications such as in retail management, healthcare, toll stations, postal service and many other areas. However, RFID has various problems and concerns associated with it. This paper focuses on some of the issues seen in retail management. The paper also provides a handful solution to counter some of these issues. After considering some of these solutions, the paper provides us with ideal RFID network that can be use in day-to-day life.

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1. Introduction: What is RFID?
RFID as a technology has grown rapidly over the past few years due to its application in various areas. After its inception, the cost of RFID tags have declined significantly over the past few years, that it is now beginning to replace the barcode system. [12] Unlike barcodes, RFID tags are smart tags with an in-built memory that can contain variety of information about the object. RFID makes use of radio waves to track objects. This automates tracking, reduces human workload and improves management. RFID tracking consists of tags and readers. An RFID tag consists of an integrated circuit that has memory and a transponder that acts a transmitter and receiver to send and receive information to the RFID reader.
Tags are of three types: Passive, active and Battery assisted passive tags (BAP). Passive tags operate without battery and are cheapest of all the tags. Active tags have an in-built battery that supplies power to the tag. Thus, active tags have wider coverage range and can be detected from a farther distance than passive tags. Active tags are also referred to as smart tags, as they can initiate communication by themselves. However, they are the most expensive tags and are only used in critical area. BAP also has an in-built battery but it is activated by a RFID reader that supplies power to the tag. An RFID reader is managed by a computer system that stores databases of all RFID tags. It alerts in case if a product goes out of stock. RFID readers are of two types: Fixed and Mobile. Fixed RFID readers capture tags at a static location. For example, we find fixed readers at the entrance of a departmental store. Mobile readers are movable readers that can track objects on the move. We can find a mobile reader in a manufacturing plant that capture moving devices moving in the process of production. [2]

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2. Advantage of RFID system over barcode system

i. Automation: RFID system automates the management of goods. We need require man-power who needs to continuously monitor the system as in a barcode system.
ii. Cheap: With the rapid advancement in miniaturization, the cost of RFID tags has reduced significantly. Today, the...

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