| 摘要 |
A theft prevention device is provided for being mounted to a package housing an item. The device comprises a controller, at least one microphone and an alarm device. The controller provides for identifying at least one predetermined sound signal indicative of unauthorized access into the package. The microphone is in communication with the controller for capturing ambient sound and providing a sound signal indicative of the ambient sound to the controller. The alarm device is in communication with the controller for being controlled thereby. The controller provides for comparing the sound signal indicative of the ambient sound with the sound signal indicative of unauthorized access into the package in order to identify a match and thus activating the alarm device to signal an alarm associated with the match. |
