It would be great to have something like this, but for digital documents. The Plasma Poster is one approach, but I think the reason this works is because there's not much of value here (and no electrical components to maintain).
But how can we share digital documents at a completely analog kiosk? We need a way of pressing a link to a document (e.g., a QR-code) into paper. One approach might be a light activated stamp ink. That way you could display a QR code on your phone screen, make an impression in the stamp, then stamp a piece of paper that you could leave at the library. Another low-fi approach (from the kiosk's perspective anyway) would be deformable phone screens. The screen could then deform to match a QR code. With a piece of paper placed over the screen and a pencil you could then easily create a rubbing of the code.
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