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Assistive Technology for Accessing Computers and Mobile Device

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Assistive Technology for Accessing Computers and Mobile Device

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- low tech adaptations use no electronic components and are relatively low-cost items

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Danny is a High school student.

Danny is right hand

He has severely burned in a fire

So, during his healing process he has to wear a pressure bandage to help reduce scaring

Danny is right handed but he was unable to write during this healing process

It affected him writing

He used different keyboards and had a defect time using them

But when he used on-screen keyboard Danny was able to locate the keys he wanted much faster the other keyboards. He was able to control the mouse using his right hand and could quickly and easily navigate from keys to key.

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- mini keyboards are beneficial for students who 1. have motor impairments that restrict their range of motion, making it difficult or impossible to access all the keys on a standard keyboard. 2.  have good accuracy within a narrow range of motion using their fingers or a selecting/pointing device.

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Half Qwerty Keyboards:

Poor fine motor control

Need a larger target are

Familiar with the Qwerty layout

Wants a layout similar to typical peers

http://www.keyboardco.com/product-images/matias_half_qwerty_508_keyboard_large.jpg

Mini keyboards:
·       Very limited range of motion

·       Can use only one hand

·       Good targeting skills

·       Familiar with Qwerty layout
http://www.siig.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/j/k/jk-us0312-s1usb_mini_keyboard.jpg

ABC Layout:

Poor fine motor control
Need a larger target are Young

Helps with someone with academic disability

Currently learning the ABC

http://i.ebayimg.com/images/i/360474982062-0-1/s-l1000.jpg

Overlap:

Poor fine motor control

Need a larger target area

Requires customized layouts

Very limited range of motion

Can use only one hand

Good targeting skills

Frequency of use layout:

Very limited range of motion

Can use only one hand

Good targeting skills

Need to increase keyboarding rate

Willing to learn frequency of use layout

On-Screen Keyboards:
provide computer access for students who do not have the motor skills necessary to use the keyboard.
https://www.bing.com/images/search?view=detailV2&ccid=JSDs5Tqg&id=64ECA41472ED0B8443650B1F79D7797D67F8943C&thid=OIP.JSDs5TqgcEfKEdYYYr2wNgHaEK&mediaurl=https%3a%2f%2fwww.ergohacks.com%2fwp-content%2fuploads%2f2012%2f02%2fOn-screen-keyboard.jpg&exph=1080&expw=1920&q=on-screen+keyboards%3a&simid=608033351432604729&selectedIndex=0&ajaxhist=0

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1.Keyboard labels: large letters, high contrast colors, braille labels

2. Selecting/pointing devices: handheld dowel, mouthstick, chinsticks and headsticks

3. Keyguards: Acrylic or metal

4. Moisture Guards: transparent long-term use or disposable, printed with key labels
- keyboard protectors or keyboard skins

4. Trackball: remains in one place fits in the palm of your hand.

5. Adaptive joystick: special handles to accommodate different grasping abilities, keyboards to prevent accidental clicking.

6. Eye-gaze systems: track the movements of students eyes to direct the mouse pointer.  It is used to determine where a student is looking and then position the mouse pointer at that spot.

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Types Of Commercially Available Switches 

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Types Of Commercially Available Switches 

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Plate switch (both wired and wireless):

The switch comes in all size, shapes, and colors.

The students push down on the switch, which then activates the toy or device to which it is connected. Some of these are designed for the use of head, switch or foot switches or students knee or thigh.

Lever:

The flexible mechanism is activated by swiping lightly against the lever in one direction.

Squeeze/pinch:

This thin plastic switch is activated by squeezing or pinching.

Sip and Puff:

This switch operates by changing air pressure. The student blows into a tube for one activation and sucks air out of the tube for a second activation.

Sensor:

A sensor switch is activated by slight muscle movement, such as wrinkling the forehead or thumb flex and can be adjusted for sensitivity.

Proximity:

Students can have activated a proximity switch by moving body part over a sensor with no touch or pressure.

Infrared:

This switch is activated when an infrared beam is broken, such as by an eye blink

Bluetooth:

These plate switches connect wirelessly to mobile device as well as computers.

iPad:

The entire iPad can act as a single a switch when a setting under Accessibility setting is selected.