How would you read it back?
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* https://en.wikipedia.org/wiki/Optical_braille_recognition
* http://www.cs.huji.ac.il/~springer/DigitalNeedle/index.html
* 3D Scanning At Home! (Using an xbox Kinect) : https://www.youtube.com/watch?v=_cKb3oEM47E
... If a picture is worth a thousand words, how much could we encode in a statue?