May 09 2004
Implications Of Fitt’s Law
Tuesday design rant.
Fitt’s Law (discovered in 1954![1]) is a simple formula that
describes the amount of time that will be needed for the average user
to click on a target on the screen. From the UsabilityFirst.com
glossary:
T = k log2(D/S + 0.5), k ~ 100 msec.
T = time to move the hand to a target
D = distance between [...]