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World's smallest QR code, smaller than bacteria, could store data for centuries (www.sciencedaily.com)
submitted 7 months ago by to c/technology@lemmy.world
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[–] 17 points 7 months ago (1 child)

Optar would be a much better choice than QR codes if you want to store lots of data on microfiche. It stores about 200 kB per page.

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  • [–] 2 points 7 months ago

    I remember seeing that years ago, wanted to make like a photoresist mask to etch it into metal.

    These days you could probably feed it to a laser engraver, get some nice depth on a thicker sheet of e.g. aluminium, would be a nice display piece at least.

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