Response to spacing between touch targets

the question: How many pixels in between touch targets meets user need on
the low-vision side? We have it at two pixels. And does the overall target
size impact the spacing requirements?

Pixels between touch targets is difficult to define.
Is it the background space (color) between objects? is it inactive (dead)
space between buttons? or something else.

Wayne called the touch separation "functional separation". If a user
presses somewhere between 2 adjacent active elements which gets fired. LVTF
does not have an opinion on functional separation.

Visually, space between targets is a combination of factors such as

   - target color(s) (contrast between targets)
   - contrast with background (included boundaries for targets with out
   borders)
   - borders, including bevels, rounded corners, inset/outset border, etc.
   - combinations of any of the above

targets can touch each other visually, but because of the above affordances
they can still be visually discrete elements. Defining a visual separation
seems prescriptive.

Hope this helps. Happy to discuss further.

Jim
-- 
Jim Allan, Accessibility Coordinator
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9452 http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964