1. Wireless Usability Software Usability Engineering Spring Semester 2003 Dr. Randolph Bias by Ding-Yu, Chung (Alex)

2. Wi-Fi? –Wireless Fidelity, the informal name given to the IEEE 802.11b High Rate standard –802.11 is the name for wireless LAN specifications in general –2.4Ghz

3. Devices –Cell phones –PDAs –Laptop Computers

4. Range – line-of-sight

5. Advantage –Inexpensive $200-$300 dollars –Scaleable two home computers or the entire University of Texas at Austin campus. –Useful & Flexible Disdvantage –Line-of-Sight –2.4Ghz –Security

6. Security –no physical barrier Wi-Fi units broadcast RF signals, radio frequency –encryption –firewall?

7. Case Study –Starbucks the need of providing service MobileStar, one of the largest wireless Internet Service Providers T1 line via a wireless Access Point using hardware supplied by Cisco and Compaq and software developed using Microsoft tools

8. Future –802.11a –54-100Mbs in the 5GHz band –Home appliances –Game consoles