As the trend to reduce the volume in a wide variety of consumer applications continues, so does the demand for even smaller memory cards. This resulted in the MultiMedia Card that features minimum dimensions of 32 x 24 x 1.4 mm. The card contains a controller that handles the entire data transfer and also the memory management. The card has 7 pins. Major initial uses of the MMC were mobile phones and MP3 players.
Because of the copyright protection issue that is particularly apparent in MP3 players, the MMC was used as a basis to develop a new memory card, which has a copy protection feature to prevent unlawful, uncontrolled copying and offers higher memory capacities due to its thicker design.