Handheld gadgets storing thousands of hours of film footage could soon be a reality thanks to IBM scientists.
Researchers for the computer giant are working on a technology known as racetrack memory which uses tiny magnetic boundaries to store data.
In a paper in the journal Science, the team at IBM's Almaden lab in California outline ways to make the building blocks of the novel storage medium.
The capacity of MP3 players could increase 100 times from present levels.
But the IBM team say racetrack memory is still seven to eight years away from commercial use.