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A comment on Ultrasound technology lets you touch and manipulate virtual objects. Parent comment

Re:Ultrasound technology lets you touch and manipulate virtu... by joezydeco on Wednesday February 03, 2016 @09:58AM (#11026741)
From your account, and looking at the pictures, you need to hold your arm/hand/finger in the air to make this work.

How long can you do that before it becomes uncomfortable (aka "gorilla arm")?

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Re:Ultrasound technology lets you touch and manipulate virtu... by jarmitage on Wednesday February 03, 2016 @02:24PM (#11028943)
Good point, although I wasn't using it long enough to know exactly. I imagine you could apply the same rule of thumb as with other gestural controllers.

Another aspect of fatigue would be: does the user become fatigued/insensitive to the haptic interaction over time?

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