Data storage unit used to contain the mind-state. Also contains a digitized copy of the owners biocode to allow the nano- construction of a new body if the original is destroyed. A standard memory box is a rectangular solid approximately of dimension 3x1.5x.75cm. Memory boxes are typically copied at least three times and the copies kept in separate locations. They are also built to be as close to indestructible as their owners can afford. A standard design typically involves multilayer buckytube shells interspersed with foamed ceramic thermal insulation.