In civil proceedings, experts are appointed representing different scientific areas offering wide-ranging expertise on issues requiring expert opinion. This article aims to describe the role and importance of experts in the informatics area who are appointed in civil proceedings. The contribution of expert opinions in informatics has been defined on the basis of their practical use in judicial proceedings under the rules of civil procedure. The importance of an informatics expert opinion can be seen only through the analysis of case-studies. It is possible to see on the basis of the analysis of selected rulings in which cases the courts considered it necessary to appoint an expert in informatics, and in which situations the court considered it as unjustified. The considerations elaborated upon in this article relate mainly to the type of specific information required from court experts in informatics including the purpose for which the parties requested the appointment of an expert together with the influence of the expert opinion on the content of a court ruling. Despite a limited number of years so far in appointing court experts in informatics, in line with the continued developments in technology, their contribution in civil proceedings has been growing steadily. Judges can use opinions made in this area in many cases which are drawn from a very broad range of legal and factual bases. There are more and more cases which require the involvement of court experts in informatics. The subject matter investigated by a court expert in informatics is constantly evolving and broadening in scope. It may be assumed that over time court experts in informatics will be among the most frequently appointed experts to prepare opinions in court proceedings.

Introduction to the process of evidence obtained by the participants in the proceedings issue is very important. Recognising them as evidence in the process does not raise doubts in principle, but their analysis is very difficult. There are no requirements as to their contents, as well as the author.Therefore, it is important juxtaposition of the two thus obtained evidence on the basis of criminal and civil procedure.