| abstract |
The invention is directed to an improved 2-dimensional/matrix barcode to store machine- readable information in a visual form. The barcode comprises a targeting means, a pixel pattern to store information and a pixel-free area, e.g. suitable to receive further information in form of a company logo or text. The barcode is optimized to be processed by a mobile device such as a cellular phone or a handheld (PDA) comprising a camera. The invention further comprises a method to retrieve information from the barcode. |