The so-called minidisc, however, should be distinguished from CD-Rs. Although the minidisc is a recordable optical product, using the same laser technology as the CD-R, it is at the same time erasable and always encased in a fixed housing, comparable to that of 3,5 inch diskettes. To write/read on the minidisc requires specific equipment (minidisc recorder or player), which does not form part of a personal computer. In view of the differences in physical characteristics and as the targeted market is entirely different, the minidisc is not covered by the measures adopted.
