This Stanford team is working on a way to display 3D information, like in a CAD or modeling program, using a “2.5D” display made up of pins
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It opens up the possibility of blind people being, not just consumers of the benefits of fabrication technology
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since of course it can’t show the entire object floating in midair. But it’s an easy way for someone who can’t see the screen to understand the shape it’s displayin
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The Shape Lab at Stanford is working on a number of projects along these lines — you can keep up with their work at the lab’s website.