more good stuff

I think we can distinguish between visual target and touch target...

   - Determine the size of each visual target.
   - Determine the size of each touch target—and define it in your design
   specification!
   - Evaluate touch targets for possible interference errors. If small
   targets are too close together, adjust their size and spacing.
   - Determine the consequences of accidental taps on adjacent targets. If
   they’re severe, protect users from them by rearranging targets or placing
   them further apart.


http://www.uxmatters.com/mt/archives/2013/03/common-misconceptions-about-touch.php#sthash.sfRgVb65.dpuf

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David MacDonald



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