Wearable article and electronics arrangement for transferring power

1. A wearable article comprising:

a power source;

a processor; and

a wireless power transmitter;

wherein the processor is arranged to determine whether a power transfer condition is satisfied, and, in response to determining that the power transfer condition is satisfied, the processor is arranged to control the wireless power transmitter to wirelessly transfer power from the power source to an electrical load of an external apparatus communicatively coupled to the wearable article,

wherein the wearable article further comprises a fastener element, the fastener element comprising a clasp arranged to form a mechanical connection with the external apparatus.

2. The wearable article as claimed in claim 1 , further comprising a communicator arranged to receive identification information from the external apparatus, wherein the processor is arranged to determine from the identification information whether the power transfer condition is satisfied.

3. The wearable article as claimed in claim 2 , wherein the processor is arranged to determine that the power transfer condition is satisfied when the identification information identifies that the external apparatus is authorized to receive power from the wearable article.

4. The wearable article as claimed in claim 2 , wherein the identification information relates to the identity of a user associated with the external apparatus.

5. The wearable article claimed in claim 4 , wherein the identification information comprises biometric information identifying a user associated with the external apparatus.

6. The wearable article as claimed in claim 5 , wherein the processor is arranged to determine from the biometric information whether the user associated with the external apparatus is authorized to receive power from the wearable article.

7. The wearable article as claimed in claim 6 , wherein the processor is arranged to determine from the biometric information whether the user associated with the external apparatus is the same as a user wearing the wearable article, and wherein the processor is arranged to determine that the power transfer condition is satisfied when the user associated with the external apparatus is the same as the user wearing the wearable article.

8. The wearable article as claimed in claim 7 , wherein the processor is arranged to compare biometric information identifying the user wearing the wearable article to the biometric information identifying the user associated with the external apparatus to determine whether the user associated with the external apparatus is the same as a user wearing the wearable article, wherein the biometric information identifying the user associated with the wearable article is obtained from sensor data sensed by a sensor of the wearable article.

9. The wearable article as claimed in claim 2 , wherein the communicator is arranged to receive the identification information over a near-field communication protocol.

10. The wearable article as claimed in claim 1 , wherein the processor is arranged to determine that the power transfer condition is satisfied when the wearable article receives an authorization command from a user to transfer power to the external apparatus.

11. The wearable article as claimed in claim 1 , wherein the processor is arranged to determine that the power transfer condition is satisfied when a remaining charge of the external apparatus is less than a predetermined threshold, the wearable article is arranged to receive power status level information from the external apparatus which indicates the remaining charge for the external apparatus.

12. The wearable article as claimed in claim 1 , wherein the wearable article is arranged to receive data from the external apparatus, wherein the wearable article is arranged to perform an action on the received data, wherein the action comprises one or more of storing the data in a memory; processing the data; and transmitting the data.

13. The wearable article as claimed in claim 1 , wherein the external apparatus is a further wearable article.

14. An apparatus comprising:

an electrical load;

a wireless power receiver; and

a communicator,

wherein the communicator is arranged to transmit identification information and/or power status level information to a wearable article that is communicatively coupled to the apparatus, and

wherein the wireless power receiver is arranged to receive power from a power source of the wearable article such that power is transferred from the power source to the electrical load,

wherein the apparatus is arranged to mechanically couple to the wearable article by a fastener element comprising a clasp.

15. The apparatus as claimed in claim 14 , wherein the apparatus is a wearable article.

16. The apparatus as claimed in claim 15 , wherein the wearable article comprises a sensor.

17. The apparatus as claimed in claim 16 , wherein the sensor comprises an optical biosensor.

18. A method of transferring power from a wearable article to an external apparatus, the method comprising:

mechanically coupling, by a fastener element comprising a clasp, the wearable article to the external apparatus;

determining, by the wearable article, whether a power transfer condition is satisfied; and

in response to determining that the power transfer condition is satisfied, wirelessly transferring, by the wearable article, power from a power source to an electrical load of the external apparatus.

19. The wearable article as claimed in claim 1 , wherein:

the wearable article is arranged to receive identification information from the external apparatus mechanically connected to the fastener element, the identification information identifying whether the external apparatus is authorized to receive power from the wearable article;

the power transfer condition is satisfied when the identification information identifies that the external apparatus is authorized to receive power from the wearable article; and

the processor is further arranged to, in response to determining that the power transfer condition is not satisfied when the identification information identifies that the external apparatus is not authorized to receive power from the wearable article, control the wireless power transmitter to not wirelessly transfer power to the external apparatus.

20. The method as claimed in claim 18 , further comprising:

receiving, by the wearable article, identification information from the external apparatus mechanically connected to the fastener element, the identification information identifying whether the external apparatus is authorized to receive power from the wearable article;

determining, by the wearable article, that the power transfer condition is satisfied when the identification information identifies that the external apparatus is authorized to receive power from the wearable article; and

in response to determining that the power transfer condition is not satisfied when the identification information identifies that the external apparatus is not authorized to receive power from the wearable article, control a wireless power transmitter of the wearable article to not wirelessly transfer power to the external apparatus.