Electromechanical lock

1. An electromechanical lock comprising:

an electronic circuitry including a wireless interface for communicating with a communication device, the electronic circuitry being configured to:

proceed authentication with the communication device, and

receive wirelessly from the communication device operating power for the electronic circuitry for authentication;

perform authentication utilizing the received operating power;

and, provided that the authentication is unsuccessful, cease receiving operating power and end operation;

and, provided that the authentication is successful,

receive wirelessly from the communication device operating power until a required power level has been obtained for issuing an open and close command for an actuator,

issue the open command and in case a user input is not received in a predefined time, the close command;

the actuator being configured to receive the open command to set the lock in a mechanically openable state and the close command to set the lock in a mechanically locked state.

2. The electromechanical lock of claim 1 , further comprising one or more storages for storing operating power for sending the open and close commands to the actuator and for the operating power required by the actuator.

3. The electromechanical lock of claim 1 , further comprising storages for storing operating power for sending the open command and storages for storing operating power for sending the close command to the actuator.

4. The electromechanical lock of claim 1 , further comprising

a user interface configured to receive input from a user, and

a coupling arrangement for coupling the user input to a lock mechanism in case the actuator is set to the openable state.

5. The electromechanical lock of claim 4 , further comprising an arrangement for mechanically controlling the actuator to return the lock from the openable state to the locked state when the user input based opening operation is finished.

6. The electromechanical lock of claim 1 , wherein the electronic circuitry is configured to indicate a user when the lock is openable and when access is denied.

7. The electromechanical lock of claim 1 , wherein the electronic circuitry is configured to send the communication device an indication when the lock is openable and when access is denied.

8. A method for operating an electromechanical lock, comprising:

providing a wireless interface for communicating with a communication device;

receiving wirelessly from the communication device operating power for proceeding authentication with the communication device using the wireless interface, and,

provided that the authentication is unsuccessful, ceasing receiving operating power and ending operation, and

provided that the authentication is successful, receiving wirelessly from the communication device operating power until a required power level has been obtained for issuing an open and close command for an actuator,

issuing the open command and

issuing the close command in case a user input is not received after the open command in a predefined time;

setting the lock in a mechanically openable state in response to the open command and

setting the lock in a mechanically locked state in response to a close command.

9. The method of claim 8 , further comprising: storing operating power in one or more storages for sending the open and close commands and for the operating power required by the actuator.

10. The method of claim 8 , further comprising: controlling the lock mechanically to return from the openable state to the locked state when the user input based opening operation is finished.

11. The method of claim 8 , further comprising: indicating a user when the lock is openable and when access is denied.

12. The method of claim 8 , further comprising: sending the communication device an indication when the lock is openable and when access is denied.

13. A non-transitory computer program product encoding a computer program of instructions that, when executed on an electronic circuitry, including a wireless interface, of an electromechanical lock, carry out the steps of:

controlling reception of operating power received wirelessly from a communication device via the wireless interface, and applying the received operating power for

proceeding authentication with the communication device using the wireless interface, and provided that the authentication is unsuccessful,

ceasing the reception of operating power and ending operation;

and provided that the authentication is successful,

controlling the reception of operating power received wirelessly from the communication device until a required power level has been obtained for issuing an open and close command, and applying the received operating power for issuing open command for setting the lock in a mechanically openable state and issuing close command in case a user input is not received after the open command in a predefined time.

14. The electromechanical lock of claim 2 , further comprising

a user interface configured to receive input from a user, and

a coupling arrangement for coupling the user input to a lock mechanism in case the actuator is set the openable state.

15. The electromechanical lock of claim 3 , further comprising

a user interface configured to receive input from a user, and

a coupling arrangement for coupling the user input to a lock mechanism in case the actuator is set the openable state.

16. The electromechanical lock of claim 14 , further comprising an arrangement for mechanically controlling the actuator to return the lock from the openable state to the locked state when the user input based opening operation is finished.

17. The electromechanical lock of claim 15 , further comprising an arrangement for mechanically controlling the actuator to return the lock from the openable state to the locked state when the user input based opening operation is finished.

18. The electromechanical lock of claim 2 , wherein the electronic circuitry is configured to indicate a user when the lock is openable and when access is denied.

19. The electromechanical lock of claim 3 , wherein the electronic circuitry is configured to indicate a user when the lock is openable and when access is denied.

20. The electromechanical lock of claim 4 , wherein the electronic circuitry is configured to indicate a user when the lock is openable and when access is denied.