Security sticker, also called tamper-evident sticker, commonly known as the secret sticker with PET substrate. The PET negative special processing to form a matrix (matrix usually have "VOID", "OPENED", has opened a special section or customer specified ). our security prints or patterns will be 100% TOTALLY transferred to the application surface if tamper proof sticker is removed, this irreversible change provides remarkable evidence of unauthorized access, for improving your security of assets. Suitable size The size of this Tamper Evident Label is 2.5x8 cm; The small size can seal envelopes and product packaging well. Confidentiality You can fill in the signature, time, and a small part on the label. You can fill in a custom number or mark to provide maximum security. Waterproof Even if water drops on them, the material can hold it well, and is resistant to moisture, light, scratches, heat and chemicals Tamper Evident After removing the sticker, a permanent mark will be left on the surface of the protected item, which is an obvious removal trace, so as to ensure that your item is not tampered with and protect your assets. Multi-Usage Tamper proof stickers are suitable for different products. You can stick them on the product or product packaging to increase customer trust in the product. Cosmetic product electronic product chemical product food medicine commodity office equipment etc.