1.3 Ensure that controls are adequately sized and sufficiently spaced to be operated by people with limited dexterity
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The user should be able to operate any control, such as a button, key or knob, without accidentally operating any other control at the same time. This means that each control should be sufficiently large for the user to target and activate it, even if they suffer from limited dexterity through lack of motor control or shaking hands. Precise activation should be possible even with shaking hands. Controls should also be sufficiently spaced out that the user does not accidentally activate two at once.