re the hand- held is placed, allowing the user to input text without a physical keyboard. "There are no mechanical moving parts whatsoever in the virtual laser key- board," says Ken Schilling, iBIZ's president and CEO. "It provides a projected image that is the perfect portable input device for PDAs. It's similar in respon- siveness to regular keyboards, but extremely futuristic looking." The iBIZ virtual laser keyboard is compatible with Palm, Pocket PCs, laptops, and desktop PCs. 9.6 THOUGHT INPUT The ultimate hands-free input technology may have been invented by Georgia State University researchers. The team has developed a Web browser that allows people to surf just by thinking. Previous research has shown that it is possible to move a cursor by con- trolling neural activity. The researchers' BrainBrowser Internet software is designed to work with the limited mouse movements that neural control allows. The browser window is divided into an upper section that resembles a traditional browser and a lower control section. Common controls like "Home", "Refresh", "Print," and "Back" are grouped in the left-hand corner and provide feedback. When a user focuses his attention on a button, it becomes highlighted, and when the user successfully focuses on clicking the button, it emits a low tone. The right side of the control section displays links contained in the current Web page. This allows the user to more easily scan and click the links. The researchers are working on a virtual keyboard with word prediction technology that will allow users to enter URLs. 9.7 OUTPUT Output technology is on the other side of the human-device interface equa- tion. Until about a decade or SO ago, electronic display technology went almost unchanged for nearly a half century. The cathode ray tube (CRT), bulky and power ravenous, was the most widely used electronic display technology, widely used on TVs and computers. Liquid crystal displays were available on laptop computers and PDAs, but these were far too expensive for use on the desk