Ephemeral peripheral device

A portable peripheral computing device adapted to secure data for an application executing on a separate mobile device comprising:

• an interface on the portable peripheral computing device which is adapted to communicate data between the portable peripheral computing device and a high speed port on the separate mobile device;
• an ephemeral memory on the portable peripheral computing device which is adapted to store ephemeral data based on a security designation provided by the separate mobile device;
• an ephemeral memory controller circuit on the portable computing device adapted to write and read said ephemeral data to and from the ephemeral memory based on security parameters provided by the separate mobile device application;
• the ephemeral memory controller on the portable peripheral computing device being adapted to effectuate at least two (2) separate data erase modes, including:
• 1) a first erase mode in which first ephemeral data in the ephemeral memory is deleted on a bulk basis based on a dedicated erase operation;
• 2) a second erase mode in which second ephemeral data in the ephemeral memory is automatically deleted on a byte or bit basis as part of a read access operation made to such ephemeral data;
• wherein said second erase mode alters an original physical charge state of cells storing such second ephemeral data, and such that an original value of said second ephemeral data is unreadable.