Archiving Data On Plain Paper Using 2D Images
Optar or OPTical ARchiver is a project capable of squeezing a whopping 200 kB of data onto a single A4 sheet of paper, with writing and reading achieved with a standard laser printer and a scanner. It’s a bit harder than you might think to get that ...continues
See https://gadgeteer.co.za/archiving-data-on-plain-paper-using-2d-images/
