Member States should allow the possibility for competent authorities to exercise such intrusive powers to the extent necessary for the proper investigation of serious cases where there are no equivalent means for effectively achieving the same result.
Ba cheart go gceadódh na Ballstáit go bhféadfadh údaráis inniúla na cumhachtaí ionsáite sin a fheidhmiú a mhéid is gá chun cásanna tromchúiseacha a imscrúdú go cuí i gcás nach bhfuil aon mhodh coibhéiseach ann chun an toradh céanna a bhaint amach go héifeachtach.