Lack of research on how to implement DPPs, generate data, track and trace materials and engage all stakeholders in helping compile data across a product’s lifecycle. It is especially important to figure out how to ensure that data will be updated by suppliers, brands, consumers and recycling facilities to enable all the information to be correct and up-to-date. Therefore, implementation options for digital product passports need to be evaluated to allow a circular flow of materials through the active engagement of all the actors involved.

-Manufacturers are the most important source of product information. If DPPs are to be implemented in the EU, then it has to be done in a way that the beginning of a product’s journey is recorded and detailed by the first manufacturer, to then allow the following actors to make updates on that primary data. 

-As the idea of implementing DPPs is to enable a circular economy, then the addition of information to a DPP has to be continuous, meaning that all stakeholders, including consumers, will need to be educated and encouraged to maintain an updated database.

-If implemented, any obligations regarding DPP should be built on existing regulation, such as the four new directives from the Circular Economy Package, such as the Waste Framework Directive and the End-of-Life Vehicles Directive.

-The EU and other Governments should start developing guidelines for material tracking and mapping across value chains.