Smart lock having an electromechanical key with three positions

A method for switching a locking mechanism from a position to another one, the locking mechanism being configured to cooperate with at least one identification key having an identification code, the locking mechanism comprising an indoor mechanical actuation lever, an outdoor mechanical actuation lever and a lock clutch, the lock clutch being configured to take three positions:

• a first position where the lock clutch is disengaged from the indoor mechanical actuation lever and outdoor mechanical actuation lever,
• a second position where the lock clutch is engaged with the indoor mechanical actuation lever and outdoor mechanical actuation lever,
• a third position where the lock clutch is engaged with the indoor mechanical actuation lever and disengaged from the outdoor mechanical actuation lever,
• each mechanical actuation lever being configured to switch between the closed configuration and the open configuration when moved if the identification code of the at least one identification key is an authorized code of the locking mechanism,
• the locking mechanism further comprising:
• a processor configured to read the identification code of the at least one identification key and determine if the identification code is an authorized code of the locking mechanism,
• an access to a presence sensor, and
• the processor being further configured to send to the lock clutch switching commands to an engaged state when the presence sensor detects an authorized user to be present in the room as the authorized user was authorized to enter, and to be switched to a disengaged state when the presence sensor detects nobody to be present in the room, and
• wherein the method comprises:
• cooperating the at least one identification key with the locking mechanism,
• moving the indoor, respectively outdoor, mechanical actuation lever, and
• switching the lock clutch depending on the switching command according to a determination by the sensor of a presence of a user.