The electronic signature is a technical procedure which makes it possible to guarantee the authenticity of a document, a message or other electronic data and to ensure the identity of the signatory. It is based on a certification infrastructure managed by third party providers - certification services providers. Their infrastructure also makes it possible to provide solutions for identifying oneself to online services and to secure data which is to be transmitted. In order to encourage the development of e-Commerce, the legislator allows certification service providers to be recognized on a voluntary basis. In this way they are able to demonstrate that the quality, reliability and security of the services provided comply with the applicable standards. Under certain conditions, the Act assigns equal status to the electronic signature as a handwritten signature.