Specially designed stamp pattern covers printed information. The water- and light-resistant oil-based pigment ink penetrates deep into the paper and hides it, making it impossible to read the text. Repeated stamping is possible without an ink pad. Takes up little space. A practical way to protect personal data. Use on postcards, envelopes, or packaging boxes to cover the address and name. Can also be used to cover other confidential information: bills, account statements, contracts, and other data. Useful for protecting important and confidential information. Simply press the top button to open the lid and reveal the stamp. Easy-to-replace ink cartridge (item number: 38090). Convenient and environmentally friendly.