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| Compensating For Fitts' Law On Large Displays |
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posted by Editor on Monday November 29, @05:10PM
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This article (PDF) suggests adapting mouse pointer devices to compensate for Fitts' Law, which states that the time to acquire a target is a function of the distance to and size of the target: "The mouse is a superior input device, and will be for many years to come. But as computer screens grow larger and larger, targets become increasingly harder to hit. Many interaction designers tend to take ‘increasing the target size’ as the solution of the problem – all according to Fitts’ law. But Fitts’ law only accounts for target size and
distance – not mouse sensitivity. Increasing the target size as a means of making targets easier to hit defeats the sole purpose of larger screens." The writer concludes that adding acceleration to mice will improve their accuracy on large displays, but that it will require fine-tuning the devices for users' specific requirements. You can test yourself interactively against Fitts' Law on this site (requires Java).
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