Applications of RFID in Supply Chains

Topics: RFID, Supply chain management, Radio-frequency identification Pages: 22 (9883 words) Published: September 24, 2014
Applications of RFID in Supply Chains

Gary M. Gaukler
RFID and Supply Chain Systems Lab
Dept. of Industrial and Systems Engineering
Texas A&M University
College Station, Texas 77843-3131, USA

Ralf W. Seifert
IMD - International Institute for Management Development
Chemin de Bellerive 23, PO Box 915
CH-1001 Lausanne, Switzerland

This paper is published as a book chapter in “Trends in Supply Chain Design and Management: Technologies and Methodologies”, edited by Hosang Jung, F. Frank Chen, and Bongju Jeong, published by Springer-Verlag London Ltd.

In this chapter we first give an introduction to radio-frequency identification (RFID) technology. We discuss capabilities and limitations of this technology in a supply chain setting. We then present several current applications of this technology to supply chains to demonstrate best practices and important implementation considerations. Subsequently, we discuss several issues that may hinder a wide-spread RFID implementation in supply chains. We close by deriving several consequences for a successful implementation of RFID, and we give guidance on how a company might best benefit from this technology.


G.M. Gaukler and R.W. Seifert

1.1 An Overview of RFID Technology
At its core, RFID is a contactless interrogation method for identification of objects. Besides the applications in supply chain operations that this chapter is going to focus on, some of the everyday uses of this technology are in ID cards, sports equipment, windshield-mounted toll tags, and gasoline quick-purchase tokens. RFID has also begun to be used in keychain auto anti-theft devices and toys (most notably, Hasbro Star Wars figures), and even on paper tickets for the 2006 Soccer World Cup in Germany (Odland 2004; Want 2004).

1.1.1 RFID Hardware
An RFID system essentially consists of three parts: the RFID tag itself, the RFID reader device, and a backend IT system. The RFID tag typically consists of a silicon chip that can hold a certain amount of data (such as a unique identification number), and an antenna that is used to communicate with the remote reader device. There are chipless RFID tags as well, which exploit certain RF-reflecting properties of materials. In the case of chipless RFID, the tag’s unique serial number is given by the properties of the material, e.g. the configuration of RF fibers embedded in paper.

The reader device communicates with the RFID tag by means of sending and receiving radio-frequency waves. The way this communication happens differs between so-called passive and active RFID tags. Passive RFID tags do not have a power supply; the energy stored in the reader device's radio-frequency interrogation scan is enough to wake up the RFID tag and to enable it to send a response (that is, the RFID tag's data) to the reader device by means of reflection. Active tags contain a battery that allows them to respond to the reader's interrogation with a stronger signal, thus increasing the distance from which the tag can be read. The backend IT system is responsible for cross-referencing the RFID tag's ID number with a database record that describes the object to which the tag is attached.

The method of communication by reflection of power that is the basis of passive RFID has been described as early as 1948 (Stockman 1948). Related transponder technology has also been used by the military as a friend-or-foe means of detection in Great Britain by the Royal Airforce in World War II. Regardless of the choice of active vs. passive RFID, the radio-frequency communication between tag and reader may happen on several frequency bands. Low frequency (LF) RFID uses the 125–134 kHz and 140–148.5 kHz channels, high frequency (HF) RFID is located at 13.56 MHz, and ultra high frequency (UHF) RFID uses 868–928 MHz. These frequencies are the ones that are used in the United States of America; European and Asian frequency...

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