Protective stickers are a preventive measure against unauthorized opening of the package. The consignee will see if the security sticker is intact, which means that the cargo has not been opened. The protective stickers are sequentially numbered and marked with the inscription “SEALED”. Adheres strongly to various surfaces and leaves marks on the glued surface. In case of violation, the inscription “OPEN, VOID” appears. They are used in logistics, food and industrial goods trade, banking or pharmaceutical fields.