The CyberLock Key Tube Lock (CL-KT1) is a high security electronic lock for tracking and controlling access to physical assets. CyberLock cylinders are designed to the exact dimensions of the mechanical lock cylinders they replace. The CL-KT1 will seamlessly retrofit into 34mm key deposit tubes. Key tubes are widely deployed in Europe to help facilitate route management for telecom operators. Key tubes are often found near the entrance to a building that has a cellular tower on the roof. The tube holds a set of mechanical keys that allow the user to open only the doors needed to manage the equipment they are assigned to manage.