Description: ( Fitts' law is a predictive model of human movement ).
Fitts' Law states the " It is faster to hit the larger targets closer to you than the smaller targets further from you ".
Hitting bulls eye (target)
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Target is Small and far |
The times takes to hit the target in below picture is comparatively less than the above picture
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Target is Large and near |
- For designing of things this law is helpful and understands the movement of the people
- Brake system in cars.... Brake pedal is bigger and nearer compared to accelerator.
- Makes it faster and easier to hit at the time of emergency (Target Brake)
Consider a Computer monitor... If the icons placed at corners of the screen
- It is easy for user to access the icons if placed at the corners
- Corner placement makes the icon (target) infinitely sized , as cursor stops at the end
Look at the navigation bar in below picture
- To open Grid Design: Chandigarh Vs Chennai
- Design Basics > Grid Design > Grid Design in Printing > Grid Design: Chandigarh Vs Chennai
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Without Fitts' law |
Using Fitts' Law
- Thumbnails/pictures are clickable.
- Target is now image which larger than menu tab.
- Ease of user access.
- Distance from the target is reduced.
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| Using Fitts' Law |
Scroll down bar on the monitor :
- Target is small marked in red. Distance is considerable.
- Dragging every time makes the process slow.
Fitts' Law using scroll wheel :
- Makes the process easier.
- Target size and distance is reduces.
- Ease of control.
Magnifying lens used for repairing watches
