INFORMATION SYSTEM.
Raemon
ISYS111Week10.pdf
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Week 10
Wireless, Mobile Computing and Mobile Commerce
ISYS 111
Fundamentals of Business Information Systems
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Why are we doing this?
By completing the activities in this week, you should be able to:
1. Identify advantages and disadvantages of each of the 4 main types of wireless
transmission media
2. Explain how businesses can use technology employed by short, medium and long
range networks, respectively
3. Provide a specific example of how each of the 5 major m-commerce applications can
benefit a business
4. Describe technologies that underlie pervasive computing, providing examples of how
businesses can utilise each one
5. Explain how the 4 major threats to wireless networks can damage a business.
6. Have database skills to create forms and work with queries.
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Essential Question
How can businesses use wireless technologies, mobile computing and
mobile commerce to achieve their business goals?
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What is mobile computing?
• Have you used these phones?
• Why do you like your mobile phone?
• Why do you like mobile computing?
What is mobile computing?
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• Mobile computing refers to a real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet.
• What is real time?
• Wireless and mobile? Are they the same?
What is mobile computing?
• What is real time?
• the actual time during which a process or event occurs.
• Wireless and mobile? Are they the same?
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• They are not.
• Wireless means without wires. It uses electromagnetic waves rather than wires or cables to carry the signal between communicating devices.
• Mobile refers to something that changes its location over time.
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Sender Receiver
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Advantages and disadvantages of wireless media
Major types of wireless communication media: Microwave, Satellite,
Radio, Infrared
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Table 10.1
Short-range wireless network
800 feet or less, low power consumption Bluetooth:
• Uses omnidirectional (waves are emitted in all directions from a transmitter) radio wave. Link
max 8 devices. Range max 800 ft. Transmission speed max 50 Mbps (Bluetooth 5). •
Applications: mobile phones, PDA, music players, personal area network
Ultra-wideband (UWB): • High-bandwidth with fast transmission speeds over 100 mbps.
• Applications: streaming multimedia, locating multiple people and assets simultaneously (PLUS by
Time Domain)
Near-field communications (NFC): • Shortest range of any wireless network
• Application: embedded in mobile phones, credit cards for contactless
payment, check-in
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Source: http://www.androidauthority.com/how - it -
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Medium-range wireless networks
Wi-Fi • Low cost wireless LANs (WLANs)
• Wireless access point connects to a wired LAN or satellite dishes
• IEEE Standard 802.11a/b/g/n/ac, range 50-100m, speed 400-1300 Mbps
• Applications: wi-fi accesses in stores, restaurants…, search engines specialized in wi-fi hotspots (Wi-
FiFreespot)
Wi-Fi direct
• Support peer-to-peer communications similar to Bluetooth MiFi • A small, portable wireless device that provides users with a permanent Wi-Fi hotspot wherever they go.
Super Wi-Fi • A wireless network proposal that creates long-distance wireless Internet connections
Wireless mesh networks • Use multiple Wi-Fi access points to create a wide area network
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Wide-area wireless networks
Connect users to each other and to the internet over geographically dispersed distances
Cellular radio network • Two-way radio communications over a cellular network of base stations with seamless handoffs
• 2G, 2.5G, 3G, 4G
• Applications: mobile phones
Wireless broadband • Worldwide Interoperability for Microwave Access (WiMAX)
• IEEE Standard 802.16
• Range max 50 kms, rate max 75 Mbps
• Applications: Internet access for rural areas
Questions
What are the issues with NFC? Wi-Fi?
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Mobile commerce applications
What does this mean?
Mobile commerce describes how mobile devices are used (applied) to carry
out commerce.
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Mobile commerce applications
Location-based applications and services • Location-based advertising: eg., send user-specific ads for nearby shops
• Location-based services, eg, find nearest ATM, receive traffic alerts Financial services
• Mobile banking, wireless payments, micropayments, wireless wallets, bill payment services Intra-
business applications • Eg., nonvoice mobile services to assist delivery and dispatch services
Accessing information • Mobile portal: aggregates and provides contents & services on mobile
• Voice portal: mobile portal that can be accessed by voice Telemetry applications • Wireless transmission and receipt of data gathered from remote sensors, eg. OnStar
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Pervasive (ubiquitous) computing
Invisible “everywhere computing” that is embedded in the objects around us: smart homes, smart
appliances, floors, lights, cars, microwave ovens, mobile phones, clothes, etc.
Radio frequency identification (RFID) • Tags with microchips containing data and antenna to transmit radio signals over a short
distance to a RFID reader. • Applications: track goods, “Scan It”, contactless payment, etc
QR code (Quick Response code) • A 2 dimension code readable by QR readers & camera phones
• Applications: track goods
Wireless sensor networks (WSNs) • Networks of interconnected, battery-powered, wireless sensors (motes), relaying data to a central computer
• Applications: reducing energy wastage by proper humidity, ventilation, air condition control, long-term surveillance
of chronically ill patients…
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Use of RFID
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Wireless security
Rogue access point • An unauthorised access point to a wireless network
• Evil twin attack: attackers simulates a legitimate access point. Victims login to the wrong network and
can have their confidential information intercepted
Wardriving • Locating WLANs while driving around a city or elsewhere
Eavesdropping • Efforts by unauthorised users to try to access data traveling over wireless networks.
Radio frequency (RF) jamming • A person or a device intentionally or unintentionally interferes with your wireless network
transmissions
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Activities
Some people are concerned that attackers could use a handheld device in a
crowd to read RFID information from nearby credit card, passport, or
security access card with RFID. In 2006 a Dutch passport was read from ten
meters away. Should we not use RFID? Discuss.
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Chapter Summary
This chapter focused on • The advantages and disadvantages of the 4 main types of wireless transmission media
• How short-range, medium-range and long-range networks are used by businesses
• How businesses can use the 4 major m-commerce applications
• Pervasive computing technologies and how they can be used
• The 4 major threats to wireless networks
