This book provides rule-by-rule commentaries on the Regulation (EU) No 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market. The eIDAS regulation aims at proving a framework for secure and trustworthy electronic transactions in the EU. This volume offers comprehensive comments on all provisions of this regulation containing references to European scholarly writing. As a cross-border project this book is written by an international group of contributors and provides analysis from different European countries. In order to assess the arising legal issues the contributions to this book reflect both aspects of the eIDAS regulation: On one hand the technological-neutral approach intended by this regulation, but also the nevertheless technically determined definitions and provisions of this very specific field of law.