Portable secure media with timed erasure

A portable computer-readable medium comprising:

• a hardware connector for connecting the portable computer-readable medium with each of a first device at a first time and a configurable device at a second time;
• a hardware interface implementing a bi-directional communication protocol compatible with each of the hardware connector, the first device, and the configurable device;
• storage circuitry configured to store first data written by the first device and second data written by the configurable device, wherein the configurable device reads the first data and writes the second data, and further wherein the first device is operable to read and analyze the second data when the computer-readable medium is connected to the first device at a third time;
• and
• a timed erasure mechanism, wherein the timed erasure mechanism destroys at least a selected portion of the first and second data stored in the storage circuitry after a predetermined amount of time has elapsed from an initiating event,
• wherein the timed erasure mechanism comprises a digital timer and an erase algorithm that instructs a controller to erase the selected data stored in the storage circuitry after the predetermined amount of time has elapsed from the initiating event, and wherein further the digital timer was restarted at the initiating event.