Non-visualized permanent information recording substrate for use as a security label for authentication

摘要

The present invention relates to an information carrying substrate capable of being applied to a surface for authenticating said surface, and more particularly, the present invention relates to a an information carrying substrate capable of being affixed to a document or a product for authenticating the document or the product and also relates to method for writing an authenticating information on said substrate and further provides a method for authenticating a surface using said substrate.