Trusted shipper seal tag with steganographic authentication

Abstract

A system is provided for authenticating the identity of a container at an inspection station and for assuring the contents of the container have not been changed during transit, comprising: a copy-protected secure seal tag affixed to the container in such a way that the contents of the container cannot be accessed without altering the seal tag in a detectable way, the seal tag further comprising information hidden information containing a unique code pertaining to the container and a specific shipment of the container; and a device enabled to detect the presence of the hidden information in the seal tag and extract and verify the unique code.

Dependencies are inferred from the claim text.