A print medium is provided which has a surface provided with coded data. The coded data is indicative of a print media identifier linked to audio data which is able to be determined using a sensor module of a mobile telecommunications device. The audio data is retrievable from a database using the print media identifier. The coded data includes first coded data in a first format and second coded data in a second format. The first coded data encodes first information and the second coded data encodes second information. At least some of the first information is indicative of the print media identifier and the first format is a linear pattern. At least some of the second information is indicative of the print media identifier and of a two-dimensional coordinate grid, and the second format is a two-dimensional pattern.