Collection of location data in criminal proceedings – European (the EU and Strasbourg) standards

This article deals with the problem of collecting, retaining and processing location data for use in criminal proceedings. The collection is an interference right to privacy (the Article 8 ECHR, 7 Charter). However, such permissible if it pursues aims indicated 8(2) ECHR (prevention fight against serious crime, protection general security, national security). Therefore, question arises as when procedural authorities may obtain (what offences justify privacy) what conditions should be met by law regard this issue. ECtHR CJEU are increasingly dealing cases that concern real time retention telecommunications service providers. requires assessment whether a European standard has now been developed and, so, standard?