GPS - "Global Positioning System" ("GPS") - is a means of evidence frequently used by law enforcement agencies.
It consists of a satellite-based global positioning system, which provides a mobile receiver with its position, time information, at any location on Earth at any time.
In case-law, three positions have been demarcated:
(i) those who believe that GPS constitutes an intrusion into the private life of the suspect or defendant lacking express legal authorisation, and as such, not permitted under Portuguese law;
(ii) those who believe that express legal authorisation is necessary but that, in its absence, article 187 of the Code of Criminal Procedure should be applied analogously, i.e. the regime defined for cellular location; and
(iii) finally, those who believe that there is no intrusion into the private life of the target and that, as this is an atypical covert method, it is admissible under Article 125 of the Code of Criminal Procedure.