Double tap interval time standard

Question

Is there any standard, say ISO standard, for interval (in miliseconds) between to taps ( clicked on touch devices) which assumed as double tap? I guess it should be long enough to allow slower users to double tap, but not so long that leads to mistakes.

Solution 1

I think this is similar to the click/dbl-click issue http://en.wikipedia.org/wiki/Double-click#Speed_and_timing

The maximum delay required for two consecutive clicks to be interpreted as a double-click is not standardized. According to Microsoft's MSDN website, the default timing in Windows is 500ms (one half second).

So, apparently, it's not standardized. I'd say tapping is slower or equal to clicking (it will depend on the relative position of the hand to the device), but still 500ms sounds reasonable.

Solution 2

Warning: Speculation :)

Probably not. Something this central to the "feel" of a UI would not translate well across different input device types, or even different builds of the same device type.

For example, one touch-screen might be much more sensitive than another. Another device might be more erratic, and require more software "de-bouncing", and hence more time to make the double-tap distinction.

Also, this setting is usually configurable for greater accessibility by those who are less dexterous (e.g. children, elderly, and the disabled).

For a direct counter-example, in Windows, it is configurable: