Something like a series of high-density QR code sounds like it could work. You'd get free error correction. But at this point I think I'd go for microfiche rath

Something like a series of high-density QR code sounds like it could work. You'd get free error correction. But at this point I think I'd go for microfiche rather than paper. Edit: http://lwn.net/Articles/242735/ http://lwn.net/Articles/242735/