The European Union Agency for Cybersecurity issues technical guidance and recommendations on Electronic Identification and Trust Services helping Member States to implement the eIDAS regulation. Read so the last report of EIDAS regulation.
Additionally, there is a second report provides an overview of the most common methods for identity proofing with some examples received by stakeholders, presents the current legal / regulatory landscape and supporting standards at the international and EU level and provides the status quo in the European Countries of their remote identity proofing laws, regulations and practices.