1. Field of the Invention
The present invention concerns a method for authenticating objects or substances using chemical marking or tracing. It applies more particularly but not exclusively to the fight against counterfeiting, to automatic sorting.
2. Description of the Prior Art
As a general rule, numerous objects or substances whether in transit or on sale are identified by means of a bar code. With this code it is possible to define products but it is not sufficient for their authentication i.e. for certifying after analysis that the object or substance is indeed the one defined by the bar code.
In an attempt to solve this problem, methods integrating a chemical marker into objects or substances have been developed. However, it is necessary to have recourse to laboratories to perform analyses and detect counterfeited products: this procedure is far too time-consuming and laborious.
As for the solution which consists of developing analytical equipment specific to each product, this solution is not economically viable.