Wireless, Mobile Computing & Mobile Commerce (axel & adi)

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Across
  1. 4. something that changes its location over time.
  2. 6. without wires.
  3. 9. virtually every object has processing power with either wireless or wired connections to a global network.
  4. 10. uses radio-wave frequencies to send data directly between transmitters and receivers.
  5. 11. in remote parts of the world it is the only option available for Internet connections because installing cables is either too expensive or physically impossible.
  6. 12. is red light that is not commonly visible to human eyes and common applications of infrared light are found in remote control units for televisions and DVD and CD players.
  7. 14. technology that allows manufacturers to attach tags with antennas and computer chips on goods and then track their movement through radio signals.
  8. 15. offers uninterrupted, near CD-quality transmission that is beamed to your radio, either at home or in your car, from both GEO (XM Radio) and MEO (Sirius) satellites in space.
  9. 17. very small purchase amounts (generally less than $10) are called micropayments.
  10. 18. an industry specification used to create small personal area networks.
  11. 19. a small, portable wireless device that provides users with a permanent Wi-Fi hotspot wherever they go with a range of about 10 meters (roughly 30 feet).
  12. 20. a wireless access point that provides service to a number of users within a small geographical perimeter (up to approximately 300 feet).
Down
  1. 1. a medium-range WLAN.
  2. 2. e-commerce (EC) transactions conducted with a mobile device.
  3. 3. a real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet.
  4. 5. networks of interconnected, battery powered, wireless sensors called motes that are placed into the physical environment.
  5. 7. Cellular telephones (cell phones) provide two-way radio communications over a cellular network of base stations with seamless handoffs.
  6. 8. a Web site with an audio interface.
  7. 13. portals that aggregates and provides content and services for mobile users.
  8. 16. the area of Earth’s surface reached by a satellite’s transmission overcomes the limitations of microwave data relay stations. The higher a satellite orbits, the larger its footprint.