Expansions of the use of the Internet applications are increasing continuously. The distances have disappeared and decreased the necessary trade time. The bases of the businesses are the confidence and the other parties identification. The new communication channel demands new identify methods. The digital sign is a standard and easy to use pos...sibility to identify one another and their documents, e-mails etc. In my paper I show the
availability of e-commerce services which can be used to identify by digital sign in Hungary.