Assistive Technology devices range from no tech to high tech. Perhaps because of its title, assistive
technology people often think that the tools involved are computers and advanced gadgets. However, this isn't the case. In fact, when considering tools, professionals shouldn't automatically think complex and expensive, simple modifications should be the first course of action. However, as Dell, A., Newton, D. and Petroff J. in their book
Assistive Technology in the Classroom (2012), mention that "there are advantages and disadvantages to each of these input and output methods. The match between students' needs and assitive technology solutions must be carefully considered. (p.205).
Continuum of Mouse Alternatives
Windows and Macintosh computers have graphical user interfaces (GUI) build in. This make it easier for the user to just point and click on the desired link or icon on the screen. However for people with physical disabilities, this may be a difficult challenge. Therefore, there are solutions that range from low tech. to high tech. that can make computer use accessible for people with these fine motor or vision disabilities.
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Trackballs:
- Stationary - great for individuals with limited range of motion
- Operated with only the thumb
- Variety of shapes and sizes
- Keyguards can be applied to the ball to prevent unintended clicks
Joystick:
- Stationary base: ideal with individuals with limited range of motion
- Good for people with limited finger movement
- Button position prevents accidental pressure
- People can rest their hands on the base without clicking
- Handles can be adapted to different grasping abilities
- Often plug and play
Touch Screens:
- Input from direct touch
- Great for young children or people with severe disabilities
- For students with good motor control IPad offer great Special Education Applications
Head-Pointing Systems:
- High tech. and relatively expensive
- The head points and infrared dot onto the screen and the person clicks a switch with some part of their body.
- Good for people who cannot operate a mouse with their hands
- Users must be able to hold their heads still and, manage several applications at one time.
Eye-Gaze System:
- Tracks movement of the eye to direct mouse pointer
- Can click by blinking of the eye, switch or hovering
- Great for people without reliable muscle movement
- Must have predictable eye movement
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