If you have a data box, the authorities are only obliged to deliver communication to it. The data box, and consequently the message sent through, it is automatically signed. It is the equivalent of an electronic signature. Most things can be done electronically and the user does not have to take any additional steps. The advantage of a data box is that the user can set to receive notifications of new messages to their email, which is free of charge; or to a mobile number, which is chargeable.
Another possibility of electronic communication is the establishment of an electronic signature. This signature can also be obtained at Czech POINT, and is handled similarly to a data box. At the counter, the applicant’s identity is verified, a contract is signed, entered into the PostSygnum system (Czech Post), and a certificate is issued.