A flash memory mass storage drive stores user files in a convenient credit
card sized drive. Embodiments function as both a credit card and a mass
storage drive. Communication may be through a host interface connector
such as a USB connector, a magnetic interface, a smart card interface,
and/or a near field communication interface. In certain embodiments the
drive comprises a portion that is sufficiently thin to be swiped through
a standard credit card, ATM, or point of sale device. The USB connector
of the drive can easily be plugged into even a crowded receptacle of a
host computing device.