Achieving a Sustainable Economy with Digital Product Passports
To ensure that no trade secrets become publicly visible , it is possible to specify for each of these DPPs for which consumers it should be visible . A distinction is made between information that should be accessible only by direct customers or suppliers , and information that may be viewed by anyone . In addition , attributes can be defined to be used for aggregation along the entire supply chain , such as the carbon footprint .
Additionally , a manufacturer can assign the input products needed to produce the output product . To leave data sovereignty and management with the actual manufacturer , Sub-DPPs are only referenced using their unique ID . For this purpose , the product name or number and the manufacturer ' s name must be specified . The supply chain management application searches for the DPP of the suppliers for these given pre-products and sets the reference ID .
Figure 5-4 shows the supply chain of a Li-ion battery based on a hierarchy of DPPs and contains product characteristics such as carbon footprint , conflict minerals and certifications . These fictive characteristics are simplified for the purpose of demonstration . For productive use , rulebooks like those of the Global Battery Alliance ( GBA ) 6 or Catena-X [ 2 ] must be consulted for consolidated and obligatory characteristics .