ISYS111 Lecture Notes - Lecture 20: Wireless Security, Wireless Sensor Network, Mobile Computing
17 Jun 2018
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Mobile computing and mobile commerce:
A. What are the major drivers of mobile computing?
o Widespread availability of mobile devices
o No need for a PC
o Cell phone culture
o Declining prices
o Improved bandwidth
B. Mobile portals and voice portals
o Mobile portals: customer interaction channel that aggregates content and
services for mobile users. Services including news, sports, e-mail,
entertainment, travel information, restaurant and event information,
games, TV and movie listings, community services and stock trading
o Voice portals: website with an audio interface. Not a normal website
because it can be accessed through a standard or cell phone. Cell phone
number connects you to a website where you can request information
verbally. System finds the information, translates it into a computer-
generated voice reply and tells you what you want to know
C. Wireless financial services
o Services provide a convenient way for customers to transact business
regardless of the times or their location. These services include banking,
wireless payments and micropayments, wireless wallets, bill-payment
services, brokerage services and money transfers
D. Major intra-business wireless applications
o Mobile delivery and dispatch services used to assign jobs, along with
detailed information about the job to mobile employees
o Applications that help owners of rental vehicles, commercial transport,
heavy equipment fleets to determine location and control messages that
are sent to and from the vehicles
Pervasive computing:
E. Pervasive computing, RFID and wireless sensor networks
o Pervasive computing is invisible "everywhere computing" that is
embedded in the objects around us, including the floor, lights, cars,
washing machine, cell phones and clothes
o RFID is the technology that enables manufacture to attach tags with
antennae and computer chips to goods and then track their movement
using radio signals. Developed to replace barcodes
o Wireless sensor networks are interconnected, battery-powered, wireless
sensors called motes that are placed into the physical environment.
Motes collect data from many points over an extended space. Each mote
contains processing, storage, radio-frequency sensors and antennae to
enable users to gather more accurate information
F. Two specific business uses of RFID technology
o Retail companies use RFID to track inventory and shipments
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