University:
California State University, Northridge
Course:
COMP 528 | Mobile Computing
Academic year:

2016
Views:

92

Pages:

12
Author:

baturukam9c

10 CHAPTER Wireless, Mobile Computing, and Mobile Commerce 1 10.4 Pervasive Computing • Radio-Frequency Identification (RFID) • Wireless Sensor • Networks • The Internet of Things Radio-Frequency Identification (RFID) • RFID • Bar Codes • QR Codes RFID • RFID Systems • Two Basic Types of RFID Tags – Active RFID Tags – Passive RFID Tags • Compared w bar codes: – Bar codes requires line of sight from scanning device – Paper bar codes are easily damaged – Identifies the manufacturer and product but not the actual item QR Codes: Advantages Over Bar Codes • Store more information • Data types stored include numbers, text, URLs, and even Japanese characters. • Smaller because they store information both horizontally and vertically. • Read from any direction or angle • More resistant to damage ’S ABOUT BUSINESS 10.5 • Marks & Spencer Embraces RFID 1. Describe how RFID technology can generate increased customer satisfaction. 2. What are potential disadvantages to implementing RFID technology in a retailer such as Marks & Spencer? 3. Why did Marks & Spencer initially deploy RFID technology on a limited basis? In your opinion, was this the correct strategy? Why or why not? Be specific. Wireless Sensor Networks • Motes • Capability of Wireless Sensor Networks • Applications of Wireless Sensor Networks Capability of Wireless Sensor Networks • If one mote fails the gap is covered by nearby motes • Provides data on activities from different angles • Determine direction of movement • Weight of a vehicle • Amount of rainfall over a field of crops Applications of Wireless Sensor Networks • Digital thermostats for energy efficiency • Repair alerts on bridges and oil rigs • Real time operating performance reporting in jet engines • Warning of produce spoilage • Improve a city’s use of utilities • Smart/digital water meters • Smart electrical meters The Internet of Things (IoT) • Capabilities of IoT • Examples of IoT Use Capabilities of IoT • Reducing waste, loss, and cost • Identifying the need for repair, replacement, or recall • Tracking expiration data on perishable items Examples of IoT Use • Coke machines • A heart monitor implant • A farm animal with a biochip transmitter • An automobile tire pressure

Pervasive Computing

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