Security labels are used for applications where a label may provide either a deterrent against theft or as an indicator that an item has been tampered with. A typical application for this type of labels is where an electronic assembly that is sealed and under guarantee or service contract, may have a tamper evident label, which will be damaged if the product is tampered with, therefore providing evidence of non-authorised interference that may invalidate a warranty claim. Silver VOID polyester labels will leave the word VOID on the surface it was removed from when peeled away. It is also impossible to reposition the label as the base layer of adhesive will have come away from the label substrate. VOID labels are an excellent tamper indicator ideal for sealing product packaging or cases.