Overview#Electronic IDentification Authentication and trust Services (eIDAS) is an European Union regulation on electronic identification and trust services for electronic transactions in the internal market.
Electronic IDentification Authentication and trust Services regulates Electronic Signatures, electronic transactions, involved bodies and their embedding processes to provide a safe way for users to conduct business online like electronic funds transfer or transactions with public services. Both the signatory and recipient have access to a higher level of convenience and security. Instead of relying on traditional methods, such as mail, facsimile service, or appearing in person to submit paper-based documents, they may now perform transactions across borders, e.g., using "1-Click" technology.
eIDAS has created standards for which electronic signatures, qualified digital certificates, electronic seals, timestamps and other proof for authentication mechanisms enable electronic transactions with the same legal standing as transactions performed on paper.
Electronic IDentification Authentication and trust Services is in two parts. The first section deals with government-recognized electronic identification systems and establishes a legal framework that will allow all European Union member states to mutually recognize each other’s identification systems. This section targets the public sector and requires Member States to permit citizens from other member states to use their own electronic IDs to access their online services. Private sector companies are not directly impacted by this portion of eIDAS, although services developed for the public sector will likely also be extended to them. 
The second section of eIDAS deals with electronic signatures. It clarifies existing rules, but also introduces a new legal framework for electronic signatures and seals. However, service providers are not obliged to change their way of working in a significant manner. Instead, eIDAS offers incentives to follow European rules, by granting greater legal certainty to services that follow eIDAS’s rules designed to improve the reliability of these services.