An information processing method and system, and a mobility management network element are provided by the embodiments of the present invention. A first one of the countershafts carries a hollow shaft which can be fixed to the first countershaft and on which a first driven gearwheel is rotationally fixed. The shape memory material may be configured to change in shape in response to receiving electrical power to thereby lock or unlock the lock mechanism. At least one holding structure includes at least one compliant member holding a pimple plate for holding a removable item for the apparatus.