turvatrüki
Turvatrükk, often translated as security printing, refers to the specialized printing techniques used to prevent counterfeiting of documents, currency, and other high-value items. It involves incorporating a variety of security features that are difficult to replicate without specialized knowledge and equipment. These features can be overt, meaning they are easily visible to the naked eye, or covert, requiring specialized tools for detection.
Common overt security features include watermarks, which are variations in paper thickness that create a visible
Covert security features are designed to be invisible or difficult to detect without specific knowledge or