Blind users still struggle with online obstacles
Published: May 15, 2008Put your graphical user interface to this test: Adjust the contrast on your display until the screen is completely black.
Welcome to the world of the 1.3 million Americans who are blind. For them, the world of personal computers, office automation and the Internet offers mixed blessings. That world wasn’t designed for them, but with the right assistive technology, they can take part in it. When everything works well, they have access to an ocean of information vastly greater than anything previously available to the blind. But pitfalls and maddening frustrations are a constant reality.
Blind computer users mainly rely upon screen-reader software, which describes the activity on the screen and reads the text in the various windows, explained Gayle Yarnell, owner of Adaptive Technology Consulting Inc. in Amesbury, Mass. Yarnell is blind.
Screen readers cost between $500 and $1,000, although there are also freeware screen readers, she noted. (Windows XP and Vista come with a screen reader called Narrator, but even Microsoft Corp. says it’s not powerful enough for serious use.)
The screen reader’s output can be sent to the computer’s speakers as a synthesized voice or to a Braille display. The latter uses tiny push pins to create a pattern of raised dots that can be read by a moving finger. A unit with an 80-character line (enough for one full line of text) costs about $10,000, and Yarnell said that most blind people use a 40-character unit, which costs closer to $5,000.
Braille displays are better than speech for editing because individual characters can be isolated, she noted, and they are a necessity for the deaf-blind. She also said that it lets her silently read e-mail while talking to someone else.
Source: ComputerWorld
