Abstract: A locking system for locking and unlocking a container wherein the locking system is controlled via an electronically controlled code lock interacting with a control device. The code lock is pre-set in such a way that, for the purpose of locking, the code lock is arranged so as to be allocated a unique locking code for each individual occasion and, for the purpose of unlocking, is arranged to be allocated an unlocking code which differs from the locking code, which unlocking code is unique for each individual occasion. In the locking system, a pre-determined locking signal sequence is related to a pre-determined unlocking signal sequence, and, associated with the container, is an identification marking including an information carrier and a password associated with the signal sequence for unlocking the container.