| 摘要 |
<p>A personal security device for use in signaling an alarm event is described which is arranged to be worn on or about the human body in an accessible manner. The device comprises: user-operable activation means for activating a response to an alarm event, the activation means being activatable by a physical change of state caused by user interaction with the activation means and being arranged to indicate activation to the user in a subtle, non-obvious manner, a transmitter responsive to the activation means for transmitting an alarm event signal indicating the occurrence of an alarm event; and an inactive power source integrated into the device, the inactive power source being coupled to the transmitter. The activation means is arranged to interact with the inactive power source to activate the same and thereby electrically power the transmitter and initiate the sending of the alarm event signal.</p> |
