41 use tiny tags with embedded microchips containing

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: reless The Wireless Revolution • Radio frequency identification (RFID) • • Tags transmit radio signals over short distances to special RFID readers, which send data over network to computer for processing • Active RFID: Tags have batteries, data can be rewritten, range is hundreds of feet, more expensive • 6.41 Use tiny tags with embedded microchips containing data about an item and location Passive RFID: Range is shorter, also smaller, less expensive, powered by radio frequency energy Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter Wireless Technology Wireless The Wireless Revolution • Radio frequency identification (RFID) • Common uses: • Automated toll-collection • Tracking goods in a supply chain • • 6.42 Requires companies to have special hardware and software Reduction in cost of tags making RFID viable for many firms Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter Wireless Technology Wireless The Wireless Revolution How RFID Works RFID uses low-powered radio transmitters to read data stored in a tag at distances ranging from 1 inch to 100 feet. The reader captures the data from the tag and sends them over a network to a host computer for processing. 6.43 Figure 6-17 Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter Wireless Technology Wireless The Wireless Revolution Interactive Session: Organizations Wal-Mart Grapples with RFID • Read the Interactive Session and then discuss the following questions: • How is RFID technology related to Wal-Mart’s business model? How does it benefit suppliers? • What people, organization and technology factors explain why Wal-Mart suppliers have had trouble implementing RFID systems? • What conditions would make adopting RFID more favorable for suppliers? • Should Wal-Mart require all its suppliers to use RFID? Why or why not? Explain your answer. 6.44 Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter Wireless Technology Wireless The Wireless Revolution • Wireless sensor networks • Networks of hundreds or thousands of interconnected wireless devices embedded into physical environment to provide measurements of many points over large spaces • Used to monitor building security, detect hazardous substances in air, monitor environmental changes, traffic, or military activity • Devices have built-in processing, storage, and radio frequency sensors and antennas • Require low-power, long-lasting batteries and ability to endure in the field without maintenance 6.45 Essentials of Business Information Systems Chapter 6 Telecommunications, the Internet, and Chapter Wireless Technology Wireless The Wireless Revolution A Wireless Sensor Network Figure 6-18 The small circles represent lower-level nodes and the larger circles represent high-end nodes. Lower-level nodes forward data to each other or to higher-level nodes, which transmit data more rapidly and speed up network performance. 6.46...
View Full Document

This document was uploaded on 02/11/2014.

Ask a homework question - tutors are online