Abstract: A door with an electromagnetic locking mechanism having an increased level of security, which is provided with an electromagnetic locking mechanism activated from a an electronic lock-control unit located in a position hidden from a viewer that looks at the outer side of the door, e.g., inside the material of the door panel or on the inner side of the door. The electronic lock-control unit activates the electromagnetic lock when it receives a pre-coded modulated electromagnetic signals from a pre-coded card when the latter is brought to a position of electromagnetic coupling with the electronic lock-control unit.