Tamper Indicative, self-voiding adhesive seals provide a visual deterrent for entry into trucks, air cargo containers, aircraft, doors, cartons and a myriad of other applications.   These seals reveal a message when attempts are made to remove them to gain access to the enclosure.  Seals can be made with or without residue, and can be numbered, bar coded or die cut in any shape necessary to accomplish the task.  The TSA requires tamper evident technology to be used as a containment method for cargo containers and other enclosures, together with some non-tamper evident labels to identify cargo that has been screened.