Abstract: A method of managing ownership data of a product including an electronic tag is disclosed. The method includes obtaining from the electronic tag a tag-specific identifier, a signature that is generated based on the tag-specific identifier, and a product-specific datum. The method also includes comparing the signature and the product-specific datum with corresponding expected signature and product-specific datum for the product. The method further includes associating the product with a user in an ownership record if the obtained signature and product-specific datum match the expected signature and product-specific datum respectively. A system that is operable to execute the method is also disclosed.