Chapter 10
Convenience and Instant Connectivity
Internet-enabled mobile device makes it easy and fast to access the Web, intranets, and other mobile devices without booting up a PC or placing a call.
Mobile Banking
Many banks now offer access to financial & account information, the ability to transfer funds, and receive alerts on digital cell phones, smart phones, and PDAs.
Wireless Bill Payments
Services provided by banking institutions that allow customers to pay their bills directly from their cell phones.
Hotspot
a geographical perimeter with in which a wireless access point provides wireless access for users
Mobile Portal
aggregates and provides content and services for mobile users that include news, sports, email, entertainment, travel and restaurant information; community services; and stock trading.
Internet over satellite
allows users to access the Internet via GEO satellites from a dish mounted on the side of their homes.
Medium-range wireless networks
are the familiar wireless local area networks (WLANs). The most common type of medium-range wireless network is Wireless Fidelity (Wi-Fi).
Microwave transmission systems
are widely used for high-volume, long-distance, point-to-point communication. Point-to-point has two characteristics: first, the transmitter and receiver must be in view of each other (called line-of-sight); and second, the transmission itself must be tightly directed from transmitter to receiver.
Wide-area wireless networks
connect users to each other and to the Internet over geographically dispersed distances.
Micropayments
electronic payments for small purchase amounts (generally less than $10).
Wireless network interface card
enables mobile devices to communicate wirelessly.
Short-range wireless networks
generally have a range of 100 feet or less.
Ultra-wideband
high-bandwidth wireless technology with transmission speeds in excess of 100 megabits per second.
Financial Services
include banking, wireless payments, micropayments, wireless wallets, bill-payment services, brokerage services, and money transfers.
Personalization
information can be customized and sent to individual consumers (e.g., as a short message service).
Voice Portal
is a Web site with an audio interface and can also be accessed through a standard phone or cell phone.
Rogue access point
is an unauthorized access point to a wireless network.
Pervasive Computing (Ubiquitous computing)
is invisible "everywhere computing" that is embedded in the objects around us - the floors, the lights, our cars, washing machine, microwave oven, cell phones, clothes, and so on. (e.g., smart home, smart appliances)
War driving
is the act of locating WLANs while driving around a city or elsewhere.
Localization of products and services
knowing a user's location helps companies advertise their products and services.
Satellite radio (digital radio)
offers uninterrupted, near CD-quality music that is beamed to your radio from space. XM satellite radio and Sirius have agreed to merge as of mid-2007. Looses signal like cell phones
Shopping from Wireless Devices
online vendors allow customers to shop from wireless devices.
Geostationary (GEO)
orbits 22,300 miles directly above the equator and maintains a relatively fixed position in relation to a dish on earth; excellent for TV signals.
Location-based Services
provide information to customers about local services and conditions via cell phones.
Eavesdropping
refers to efforts by unauthorized users to try to access data traveling over wireless networks.
Mobile commerce
refers to electronic commerce transactions that are conducted in a wireless environment, especially via the Internet.
Satellite transmission
systems make use of communication satellites; three types of satellites, each in a different orbit:
Mobile (Wireless) Wallets
technologies that allow cardholders to make purchases with a single click from their mobile devices.
Radio frequency identification (RFID)
technology allows manufacturers to attach tags with antennas and computer chips on goods and then track their movement through radio signals.
Wireless Electronic Payment Systems
these systems transfer mobile phones into secure, self-contained purchasing tools capable of instantly authorizing payments over the cellular network.
Cellular Radio
use radio waves to provide two-way communication
Wireless fidelity (Wi-Fi)
used in wireless local area networks
Broad reach
users can be reached instantly when they carry an open mobile device.
Bluetooth
Can link up to eight devices within a 30-foot area and transmit up to 2.1 megabits per second.
Wireless access point
a transmitter with an antenna
Global Positioning System
a wireless system that uses MEO satellites to enable users to determine their position anywhere on the earth.
Wireless Broadband or WiMax
access range up to 31 miles and data-transfer rate up to 75 Mbps
Low-earth-orbit (LEO)
are 400 to 700 miles above the surface, so they move much faster with respect to a point on the earth's surface; require many to cover the earth.
Medium-earth-orbit (MEO)
are located 6,000 miles above the earth's surface and move; used for the GPS system.
Wireless sensor networks (WSNs)
are networks of interconnected, battery-powered, wireless sensors that are placed into the physical environment.
Near-field communications (NFC)
is the enabling technology behind (a) contactless payments with credit cards and (b) the substitution of a cell phone for a credit card (the wave of the future).
RF (Radio frequency) jamming
is when a person or a device intentionally or unintentionally interferes with your wireless network transmissions.
Location-based Advertising
is when marketers know the current locations and preferences of mobile users, they can send user-specific advertising messages to wireless devices about nearby shops, malls and restaurants.
Ubiquity
mobile device can provide information and communications regardless of user's location.
Mobile computing
refers to real-time, wireless connection between a mobile device and other computing environments, such as the Internet and an intranet.
Near-field Communications
shortest range of any wireless network; designed to be embedded in mobile devices such as cell phones and credit cards.
Mobility
users carry a mobile device and can initiate a real-time contact with other systems from wherever they happen to be.
Radio transmission
uses radio-wave frequencies to send data directly between transmitters and receivers.