PhysOrg is reporting that IBM Zurich is showing off its Millipede storage device at CeBIT. For those unfamiliar with this device it uses cantilever arms to read & write a polymer medium.
As the pits that the cantilevers read & write are ~10nm in diameter it is definitely a nanoscale device. The storage density is approximately 1 terabit per sq. inch. That capacity in that size implies that one should be able to fit the contents of a entire college education into a handheld device.