Double-secured locking and access control. PROTEC²CLIQ dynamic key cylinder group CONNECT ONLINE is intended for cases when access rights often change as it is easy to program changed access rights directly to user keys. Authorised cylinder and/or cylinder groups needs to be programmed to dynamic keys via customer software (locally or remotely). In CLIQ Connect Online, key's access rights are checked in real time via smartphone application when the key is entered to a cylinder. Used in cylinder group systems. Patented PROTEC²(T) key system.