Re: notes from the article I sent

also — remember that as you apply or remove your finger - the center changes.   So without moving you finger you can actually look like you moved out of a button that you were in  - because your center of contact changes…

g


> On Dec 17, 2015, at 12:15 PM, David MacDonald <david100@sympatico.ca> wrote:
> 
> 
> 
> “Since touchscreens sense only the centroid, or geometric center of the contact patch, the contact patch of a user’s finger is not as relevant in determining touch targets as you might think.” -
> 
> This is UX, rather than disability... but an interesting conversation starter
> 
> 
> Touch targets:
> 
> Minimum—17 pt / 6 mm
> Preferred—23 pt / 8 mm
> Maximum—43 pt / 15 mm
> 
> Spacing between targets to avoid interference errors, on center:
> 
> Minimum—23 pt / 8 mm
> Preferred—28 pt / 10 mmhttp://www.uxmatters.com/mt/archives/2013/03/common-misconceptions-about-touch.php <http://www.uxmatters.com/mt/archives/2013/03/common-misconceptions-about-touch.php>
> 
> 
> Cheers,
> David MacDonald
>  
> CanAdapt Solutions Inc.
> Tel:  613.235.4902 <tel:613.235.4902>
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