Abstract: The portable memory medium of the invention has a memory, for storing the predetermined information which is embossed on its surface, and a CPU. When a read instruction is supplied from a portable memory medium handling system externally connected to the portable memory medium, the CPU reads out the predetermined information stored in the memory, and supplies it to the portable memory medium handling system, which then displays the information on a display unit. The operator compares the information displayed on the display unit with the predetermined information embossed on the portable memory medium, and thereby determines the authenticity of the embossed predetermined information.

Abstract: A processing apparatus for magnetically transmitting data to or from a plurality of types of portable storage media, including a first media having a magnetic stripe thereon, and a second media having a magnetic transducer therein. The apparatus includes a housing, a magnetic head in the housing for interacting with the portable media for transmitting data to or from the media, a groove in the housing for receiving the portable media and longitudinally aligning the magnetic stripe of the first media with the magnetic head of the apparatus, and positioning member for selectively positioning the second media in the groove for transmission of data between the magnetic transducer and the magnetic head.