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By combining eye movement and focal depth, it is possible to specify the position in 3 degrees of freedom (3DoF).
- Is it possible to use this to move objects?
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To make it easier to manipulate depth and eye movements precisely, cues are provided.
- Cues are provided to direct the gaze to “slightly shallower/deeper than now” or “slightly to the left/right/up/down” positions.
- By following these cues, it should be possible to specify any desired three-dimensional position.
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This could easily become a regular feature on paper.