Methods and devices for marking and authenticating a product by a consumer

摘要

The method for marking a product includes:
a step of forming, on or in the product, a mark robust to copying, with a first resolution,a step of forming, on or in the product, a mark sensitive to copying, with a second resolution higher than the first resolution,a step of capturing an image of the robust mark, the sensitive mark and another part of the product anda step of memorizing an item of information representing the image of the robust mark, the sensitive mark and the other image part. In embodiments, during at least one forming step, the position of the mark formed during this forming step is random in relation to the other image part.

主权项

1. A method for marking a product, the method comprising:
forming, on or in said product, a mark robust to copying, with a first resolution; forming, on or in said product, a mark sensitive to copying, with a second resolution higher than the first resolution; capturing an image of said mark robust to copying, said sensitive mark and another part of the product; and memorizing an item of information representing the image of said mark robust to copying, said sensitive mark and said other part of the product.