4xA company deals with the implementation of solutions to improve processes to control access to objects, mainly in the real estate industry and all places where free access is not possible. The proposed solution is a unique ICT system which involves the use of a specially developed algorithm and compatible to its remote control system. The product offered is a coded lock controlled by variable code distribution management and service access codes to the locks. The proposed solution competes by no need to own physical access key and the speed of granting authorization. An important advantage is the ability to precisely control and verify access (rental).