Fitts law


Fitt law (Wikipedia)

Fitt law (Interaction Design Foundation)

Fitt law – the importance of size and distance in UI design

Fitt law – modeling movement time in HCI

Improving usability with Fitt law

When you shouldn’t use Fitts law to measure user experience

Interactive visualisation of Fitts law with javascript

Applying Fitt law to mobile interface design

How to drive conversions by implementing this simple design rule