Document with security markings, has solvent permeable connection between front and rear sides, and solvent sensitive indicator on at least one side

摘要

A connection provided between the front and rear sides of the document (1) is permeable to chemical agents used for fraud. A chemical agent applied to at least one side of the document will indicate an attempt at fraud in the connection region when a chemical agent used for fraud is applied to the document. An Independent claim is also included for a method for preparing the documents.