The Intaglio Scanning and Recognition Device is an optical detection system capable of determining the presence of A printing method, which also acts as a security feature, and gives the image a raised print effect that is difficult to achieve with other systems. The printing parts of the plate are recessed by engraving into a metal plate. The engraved plates are applied to the paper at very high pressure. The compression of the paper and the transfer of a thick layer of ink give the intaglio print a distinct tactility. More on a A banknote (or ‘bill’ as it is often referred to in the US) is a type of negotiable promissory note, issued by a bank or other licensed authority, payable to the bearer on demand. More.