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.
A double-click is a series of two clicks of the mouse button, the second occurring within a specified time after the first. The double-click time is the maximum number of milliseconds that may occur between the first and second click of a double-click. The maximum double-click time is 5000 milliseconds.
1. Introduction: Define double click speed and explain how it is used in gaming. Double click speed is the amount of time it takes for a person to click a mouse button twice. This is important in gaming because it can be used to measure a person's reaction time.
A Double-click is the act of pressing a computer button twice quickly without moving the mouse.
Typically, a single click initiates a user interface action and a double-click extends the action. For example, one click usually selects an item, and a double-click edits the selected item.
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.
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