Szajna, A.P. 2024. Conducting observation by licensed detectives using a GPS tracker to obtain information (undisclosed to the object of the investigation) about the location of a person and their chosen route – a (not only) criminal law study. Acta Iuridica Resoviensia (formelry: The Scientific Journal of the University of Rzeszow, Law Series). 44, 126 (Mar. 2024), 171–196. DOI:https://doi.org/10.15584/actaires.2024.1.11.