US 6544615, Otten, Ulrich; Wenninger, Dieter & Röber, Stefan, "Adhesive security tape for detecting unauthorized broaching of a package", published 2003-04-08, assigned to Tesa AG
US 4876123, Rivera, Raymond R.; VanVleet, Stephen B. & Wilson, Shari J., "Tamper indicating tape and delaminating film therefore", published 1989-10-24, assigned to Minnesota Mining & Manufacturing Co.
US 5633058, Hoffer, Erik & Sobel, Stephen G., "Message-indicating self-wound tape and method of making same", published 1997-05-27
US 5042842, Green, Alan; Reiss, Ronald J. & Wilson, Douglas W., "High security label", published 1991-08-27, assigned to Avery International Corp.
US 7594348, Oosterlinck, Marc F., "Security label", published 2009-09-29, assigned to CCL Label Inc.
US 8678289, Roseman, Morton F., "Anti-tamper label and item embodying the same", published 2014-03-25, assigned to Custom Security Industries Inc.
US 6888509, Atherton, Peter S., "Tamper indicating radio frequency identification label", published 2005-05-03, assigned to Mikoh Corp.
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See Security Patterns a selection of security patterns from around the world