Tamper Evident Security Labels 73 x 50mm - Blue Colour x 1000 Using tamper evident security labels in the various industries adds additional product security. The packaging used for drug and chemicals is a critical tool to ensure product safety. With a hidden void message, tamper evident security labels are provide authentication, provide theft reduction and protection against counterfeiting. Numbered Security Label - Features Adds an instant, extra level of security – providing a clear visual indication of tampering by revealing a hidden message which alerts people to the risk that the product or package may have been tampered with Made with a built in, or added, resistance to the threat of pilferage – as well as an extra level of product validation and verification