In: Business and Management

Submitted By hiepnguyen88
Words 8087
Pages 33
EIS Final Project
RFID Technology
A Comparative Study of E-ZPass and Wal-Mart
Công nghệ RFID tại Wal-Mart

Jose Malpartida, Sebastian Martinez
Matias Moral, Avraj Sandhu, Phillip Wittwer

1. Technology overview

RFID, or radio frequency identification, is a technology that allows for communication between two devices by means of radio waves. Thus neither a direct line of sight, nor a physical connection is needed. The first device is a reader or antenna, the second is a so called tag. Readers are more complex and expensive devices, whereas the tags are meant to be cheap and produced in high numbers.

Tags can be very simple, for example they could transmit a short id code, similar to a bar code, that is powered by an electromagnetic field. Else, they can be more complex: they could be written to, perform calculations for authentication like a pay-tv chipcard, and contain a power source to increase range.
Depending on the application, a major share of effort needs to also be put into an operations infrastructure acting on the data received by the antennas, for example time tracking of employees or billing for payment solutions.
The technology was first developed for military aircraft in the 1950s and 60s to allow identification of friendly planes, as the pure radar signature did not answer this question. The first patents for a RFID tag used to unlock a door touch less were awarded in 1973. In the 1980s first applications for toll collection, as discussed in this article, were developed. With ongoing miniaturization ongoing and decaying prices, in particular for tags, more and more potential applications were thought out. There was a major buzz around RFID in the late 90s and early 2000s, as it was envisaged to have a RFID tag on every coke bottle and a reader on every fridge, so the fridge would know how much is left and could order new…...

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