Multiple Pressure-Sensitive Adhesive Tamper-Evident Label

Patent US6670008


This invention is a label that is coated with multiple adhesives, providing tamper detection security to multiple vulnerable environmental situations. Coating labels with only one type of adhesive allows them to be removed without any evidence of tampering. This tamper-evident label is backed with a pattern of three different types of pressure-sensitive adhesives that offset three specific potential attempts—extreme high temperatures, extreme low temperatures, and the use of common solvents—to lift the label intact.


A tamper-evident label that includes a substrate. On the substrate is deposited more than one adhesive. Each adhesive is sensitive to a different condition. The adhesives are deposited throughout the substrate in user-definable patterns. A release layer is placed on the adhesives for ease of transport and application, but is removed prior to affixation of the tamper-evident label.


TRL 4: Component and/or breadboard validation in laboratory environment Basic technological components are integrated to establish that they will work together. This is relatively “low fidelity” compared with the eventual system. Examples include integration of “ad hoc” hardware in the laboratory.
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National Security Agency (NSA)- NSA Research Directorate

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