Apparatus for electronic data storage, including a non-volatile memory, adapted to receive a succession of data blocks for storage at respective locations therein. The sole has a hook positioned at a free end of the sole localized in the vicinity of a border of the platform. The system preferably includes two detector subassemblies; a silicon microstrip hodoscope and a calorimeter. An error recovery procedure in the system including the first adaptor would be initiated after the system timeout period has expired.