Abstract: The invention relates to a process for producing a carrier material with at least one hidden identification mark which is attached in at least one surface region of the carrier material and which is then covered. The invention furthermore relates to articles containing this carrier material and its use for analysis of the identification mark(s). By the process as claimed in the invention a carrier material with hidden identification marks is made available, the use of which is given in a wide range, especially when the original state of goods is to be established. For the consumer itself the identification mark is not necessarily visible so that he is not unnecessarily upset, but rather is confronted with a conventional decoration, specifically an embossing pattern. If necessary, such as for example in customs controls, the identification mark however can be easily exposed by depression so that analysis of the packaged product with respect to originality can take place.