A storage technology that makes indentations 10 nanometers in diameter in a plastic film. Each indentation is a bit, which can be heated back to its original shape. Driven by MEMS motors and all built into a chip, thousands of tiny probes, similar to the tips on an atomic force microscope, move back and forth a minute distance over the film. Because of its many feet, IBM's code name for its probe storage technology is "Millipede." Probe storage is expected to use no more power than a flash memory card, but store up to 100 times as many bits as traditional disk storage. See AFM.