Derivatives
The technology of using stationary MR heads was later developed by OnStream for use as a data storage media for computers. MR heads are now also commonly used in hard disks, although hard disks use the GMR variant, whereas DCC used the earlier AMR.
A derivative technology developed originally for DCC is now being used for filtering beer. Silicon wafers with micrometer scale holes are ideal for separating yeast particles from beer. The beer flows through the silicon wafer leaving the yeast particles behind, which results in a very clear beer. The manufacturing process for the filters was originally developed for the read/write heads of DCC players.
Read more about this topic: Digital Compact Cassette