Abstract: The charging of an electrical device (101) supported by an animal is disclosed. The animal is walked on leash (103) and the leash is connected to the electrical device (101). When connected in this way, the electrical device is charged such that charge is available when the animal is released from the leash such that the electrical device may be operated.

Abstract: A security tag is shown for location upon an article and removal from the article upon receiving authorisation. An internal processor (303) is arranged to transmit an output signal to an external processor indicating that a customer has identified an interest in an article. A physical switch (103) is operated to initiate a procedure for purchasing the article and releasing the tag. The tag transmits an output signal to initiate a release procedure and then receives an input signal to effect a release. The output signal is received by a mobile device and the mobile device interacts with an administration system directly to effect the purchase of the item prior to the administration system issuing the input signal. After receiving the input signal, actual release is only achieved after a further manual operation being performed by the user.