Saturday, October 19, 2019

#geek - #Scientists invent new technology to print invisible messages


Scientists invent new technology to print invisible messages
https://www.theguardian.com/science/2019/sep/25/scientists-invent-new-technology-to-print-invisible-messages

Submitted October 19, 2019 at 04:11PM by pacinothere
via reddit https://www.reddit.com/r/geek/comments/dkajah/scientists_invent_new_technology_to_print/?utm_source=ifttt

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