Void Labels also called Tamper proof label. It is a security label with a tamper proof material, after peel off the label will be separated from the surface of the preset text or pattern, usually Hidden Text: void, opened, void opened. also can be customized. Material: Glossy paper, PET, matte silver, hologram. Feature: Non-transfer, half transfer, full transfer mark. Application: Security seal, anti counterfeiting in all industries.