According to Article 159A of Criminal Procedure Code the measure is a method for gathering the data, generated in the course of performance of activities of public electronic communication networks and/or services which may be required for:
1. tracing and identification of the source of the communication link;
2. identification of the direction of the communication link;
3. identification of the date, hour and duration of the communication link;
4. identification of the type of the communication link;
5. identification of the terminal electronic communication device of the user of of that presenting itself as its terminal device;
6. establishment of an identification code of the cells used.
The application of the method is admissible with regard to intentional crimes explicitly envisaged under the Criminal Procedure Code that are punishable with deprivation of liberty for a term of more than five years.