HolyGrail 2.0: digital watermarks
HolyGrail 2.0 uses digital watermarks to invisibly label consumer goods packaging. These optical codes are the size of a postage stamp and are imprinted directly into the template of the packaging or into the mould. They can contain a variety of information, such as manufacturer, SKU, type and composition of plastic used, food or non-food, etc. Besides encoding a "digital recycling passport", digital watermarks can also be used in other areas, e.g. to engage customers or create transparency in the supply chain and in retail.