Save 256 GB of data on A4 paper

According to the "rainbow" technology of Sainul Abideen engineer (India), data can be encoded on ordinary paper in geometric form rather than binary numbers. This technique will "threaten" the optical disc because DVD only stores a few dozen GB.

Sainul Abideen is presenting "rainbow" storage technology.Photo: Daily Tech .

Text, image, audio, and video files can be printed in dense colorful circles, squares, and triangles on this surface at a density of 2.7 GB per square inch. The sheet is then read by a dedicated scanner with a separate software and the content is then decoded back to its original format. However, the encoding and decoding process has not been revealed by the author.

Abideen tested coding a 45-second movie onto paper that he called a "rainbow" video disc (RVD) and played it back on the computer with the accompanying scanner. He says there are smaller scanners that fit in a laptop or mobile phone and can read RVD with the size of a phone sim card but can hold 5 GB.

This technology will save printing paper and optical disc. Only by printing at a higher density on paper, users can store more data.