Security printing is a process that uses advanced techniques and technologies to create documents and products that are difficult to counterfeit, tamper with, or forge. Security printing is used for a variety of items, including: banknotes, cheques, passports, postage stamps, identity cards, stock certificates, product authentication, and tamper-evident labels.

Security printing uses specialized printing facilities and secure print software to achieve its goals. There are many different security printing methods, including: Thermochromic ink, Watermarks, Intaglio printing, Micro-printing, Optical variable ink, Magnetic ink, Serial numbers, Copy-evident, Prismatic coloration, and False positive testing. The method used depends on the likelihood of the item being counterfeited and the amount of loss that would result if it were falsely created.