Abstract: A data storage card that includes a card body, an aperture, an optical storage region, and a magnetic storage region. The card is formed to cooperatively engage both a drive mechanism of a magnetic stripe reader and a drive mechanism of an optical data reader. In one embodiment, the card includes a resiliently displaceable cover member that automatically moves in and out of the aperture for proper use in various data readers. Also, in one embodiment, the optical data region is formed on a film to reduce the thickness of the card. Moreover, in one embodiment, the card includes a semiconductor and a counterbalance weight. Also, the card includes a spacer for abutting against components in a optical data reader in one embodiment. Finally, in one embodiment, the aperture is smaller than standard optical data discs so as to cause proper abutment against members of the optical data reader.