This section presents summary lists of recommendations for design issues related to access for persons with disabilities. Item numbers are based on lists in related sections of this appendix.
1. Accessibility recommendations for physical design (casing)
Recommended
Manipulation and Physical Design:
2 Sculpt or bevel device entry slots.
3 Make latches operable with one hand.
7 Ensure devices do not generate electromagnetic or RF fields that would affect users with hearing aids.
9 Offer separate components that allow for use of alternative devices.
10 Provide adjustable height, swivel, and so on where appropriate.
11 Minimize operation noise levels.
12 Eliminate hard edges or sharp corners that could cause injury or inhibit correct device placement.
Input and Controls:
4 Limit button design primarily to push-button controls.
5 Use concave buttons, especially where sustained force is required.
6 Avoid twisting motions.
7 Minimize force required for operation.
8 Make all controls operable with one hand.
11 Make controls tactually discernible.
13 Provide tactile and audible actuation feedback for controls.
15 Maximize size of controls within the space available
16 Space the controls a sufficient distance to allow for tactile and visual discrimination.
Labeling:
1 Use large, high-contrast, bold stroke, sans-serif lettering, and avoid using artwork behind text.
2 Use tactually distinct icons for controls, connectors, and legends.
3 Provide optional Braille and tactile labels.
Documentation:
All points in the Documentation section of this appendix.