The priority of each state of law is to guarantee the observance of the right to inviola-
bility of the privacy of every person under its jurisdiction. Due to the fact that the privacy
right is not an absolute right, both national and international normative acts allow the
interference of state authorities under exhaustive conditions provided by law that directly
contribute to the achievement of the purpose of criminal proceedings. During criminal
proceedings, the investigating judge is in charge of the supervision of the observance of
human rights when carrying out criminal prosecution actions adversely affecting the ri-
ghts of the persons involved. The importance of judicial control is outlined by the fair,
equidistant and objective assessment of the acceptance of the interference in terms of its
proportionality compared to the aim pursued.
