Double-secured locking and access control. PROTEC²CLIQ programming key cylinder group is used as credential to access the CLIQ Web Manager software. Administrator can create programming tasks in CLIQ Web Manager and the tasks are distributed to programming keys with local PD or remote programming devices (e.g. WallPD) in the field. Also cylinders' audit trails can be retrieved with a programming key. Used in cylinder group systems. ATEX approved. Patented PROTEC²(T) key system.