The regulation on electronic identification and trusted eServices (eIDAS regulation) clearly extends the current Electronic Signature Directive from electronic signature towards electronic identification and electronic authentication. These two topics are closely linked to electronic signature and are considered in this context in this document. There are many documents, standards, industrial initiatives and European projects on identification and authentication, but the scope here is limited to electronic signature context, and wider to electronic transactions in the internal market. The present Technical Report is twofold. It firstly does a brief analysis of the implementing acts on electronic identities CIR 2015/1501 [29] and CIR 2015/1502 [30] and how this is addressed by the eID interoperability framework [31]. It secondly establishes what areas of existing standards are impacted by the eID framework and what further areas of standardization could assist nations in providing eID services.