The main requirement of a criminal evidence that establishes for the proper realization of its goals is the admissibility of the proofs, criterion to which by law interpretation results are attributed as well a few of the administration prerequisites. Moreover, due to the technical peculiarities of the electronic data carriers, the admissibility and administration requisites are subjected to some special rules on which their use in criminal proceedings depends. These conditions are designed to ensure the reliability of the data – on one hand – and the fair trial exigency – on the other. Taking into consideration everything mentioned above, this article tends to determine and analyze the stated requirements from both theoreti¬cal and legal viewpoints.