Bangalore: A final-year MCA student from a Kerala engineering college may have developed a technology where colours and trigonometric shapes can be used to encode and store data in dense clusters. Sainul Abideen of the MES College of Engineering, Kuttipuram, Malapuram district, has demonstrated the viability of converting data into geometric images in patterns and then storing it in a dense formation on a plastic sheet, or even on paper.

He calls this a Rainbow Versatile Disk or RVD (like the Digital Versatile Desk or DVD) and claims that a single sheet can store between 90 and 100 GB of information.

A small Rainbow card, the size of a phone SIM card, can store about 2 GB of data, he claims.

"I have achieved storage densities of about 2.7 gigabytes per square inch," Mr. Abideen told The Hindu over phone from Kottakkal in Kerala.

It is also cheaper to make an RVD, compared to a CD or DVD, says the entrepreneur. Mr. Abideenis talking to some companies interested in turning his idea into a saleable product. He can be contacted at mysainu@yahoo.com.

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