Patent ID: 7797021
Filing Date: 2010-09-14
Classification: G06F,G06Q

Abstract:
1. A print medium comprising a surface provided with first coded data in a linear pattern encoding first information and second coded data in a two-dimensional coordinate grid, encoding second information, the first information being indicative of a print media identifier linked to a product and of size and orientation data of the print medium, and at least some of the second information being indicative of the print media identifier, the print media identifier able to be determined using a sensor module of a mobile telecommunications device, the product being retrievable from a database using the print media identifier, the first and second coded data each being encoded in a plurality of tags printed on the print medium, each tag having a structure which includes a target and the first and second coded data, the targets being sensed by the sensor module to determine the presence of the tags, wherein at least one of the first and second information is further indicative of a digital signature associated with the print media identifier, and wherein the digital signature includes at least one of: a random number; a secret-key digital signature; and a public-key digital signature.