The master safety sticker cannot be peeled off without damage. Tamper evident function, which in any attempt to unauthorized detachment responds by specific damage to the carrier metal layer - by revealing the words "VOID" (broken) and leaving these words (part of the metal layer) on the substrate on which the sticker was affixed. The security master sticker with laser numbering is ideal for sealing documents, folders, drawers, cabinets, locks, packaging and other applications of a similar nature.