International Business Machines Corporation
Method for product authentication using a microfluidic reader

Abstract:

A method of preparing a complex microscopic colloidal mixture formulation and a method of authenticating a product containing a code attached thereto which code is a mixture of different hard bodied colloidal particles and polymeric particles having different properties, which are present in set ratios. The code is extracted from the product and is checked with data that was originally applied to the product to determine its authenticity.