Patent ID: 8266378

Claim:
A detachable USB storage device comprising: a flash memory comprising a first storage partition, the first storage partition including encrypted data that is decrypted after a first user code is received; circuitry programmed to authorize access to the first storage partition when the first user code is received by the circuitry; a user interface configured to receive the first user code while the detachable USB storage device is in a detached state and the user interface configured to provide the first user code to the circuitry; the circuitry programmed to deny access to a second storage partition when the first user code is received, the circuitry programmed to allow access to the second storage partition and not to the first storage partition when a second user code is received, and the circuitry programmed to allow access to the first and the second partitions when a third user code is received; and the circuitry programmed to reset the first, the second, and the third user codes when a reset code is received by the circuitry.