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Store data on paper with Twibright OptarStore data on paper with Twibright OptarPosted Jul 31, 2007 21:19 UTC (Tue) by roelofs (subscriber, #2599)In reply to: Store data on paper with Twibright Optar by cook Parent article: Store data on paper with Twibright Optar One wonders if this technology could be stretched to higher densities by using a limited number of easily recognized colors for the dark pixels. This might mess with the error correction concepts a bit, but it seems like it should be possible to get at least a gigabyte of information on a page of paper. A gigabyte?? That's almost four orders of magnitude beyond its current capabilities... Even in principle, using every single dot as a bit, you couldn't exceed 4MB or so (8*11*600*600/8). If you assume 8 colors, then maybe 32MB is vaguely imaginable, but that has to be close to an absolute upper limit. (Yes, I realize "dot" is ill-defined and that printers have some ability to vary the size or ink-density of individual ones, but I don't believe that capability is anywhere near precise enough to depend on for something like this, particularly given wear on print-heads/drums.) Also, you'd use a bunch of ink/toner on each page. And assuming we stick to the current claims, how much do 10,000 pages of paper cost? My gut feeling is that it's way beyond the $20 or so you'd need for a 2GB thumb drive (but since I never buy paper, I have no idea). Greg
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