Fitts's Law Test
Small, distant buttons take longer to click on than large, close buttons.
This relationship is expressed by Fitts' law:
T = a + b log2(D/W + 1)
Where T is time,
a and b are experimentally determined constants,
D is distance to the target and
W is the width of the target.
Try it yourself. Choose your input device and click 'Begin'.
Click the red square to start
0/5 clicks :
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