Definition: SmartMedia (SM) is an obsolete type of flash memory card used in older digital cameras to store data about images. No new digital cameras that support SmartMedia cards have appeared since around 2003, and the SM cards are no longer manufactured.
Toshiba developed SmartMedia in 1995. SM cards are slightly rectangular, with one corner cut at a 45-degree angle. SD cards measure 45 mm by 37 mm by 0.76 mm (1.77 x 1.46 x 0.03 inches).
