The cases of cargo burlgaries with intact seals spread lately. Malefactors either penetrate into transport facility without damaging the seal or get seal with the same number. Thereby everything that is outside of the transport facility (or container) is not a serious obstacle for the thieves. If necessay all these obstacles can be got round secretly and with impunity. And when the fact of cargo shortage is discovered, it is impossible sometimes to detect at what transportation stage burlgary was made and who the responsible person is.

As concerns to our device, it is placed inside (of container or transport facility) and malefactor does not know about its presence when opening the container. At the moment of unauthorized opening the TopGuard device fixes the fact and the time of penetration. By next data reading from the device it is found out when the unsealing was made (the TopGuard report shows the exact date and time of the event) and who must respond for it.