Yes. Installing a technical device in public places, vehicles, professional premises and private homes without the person’s consent lasting over a period of one month for the purpose of real-time audio recording, video recording or electronic data capture. Such investigative measure apply under Luxembourg law only in case of criminal offences against State’s security, terrorism and terrorism financing. Alternative measure: Surveillance and tracking of a person (A.55), Interception of telecommunications and other forms of electronic communications (A50).