§ 14 NDSG
Video surveillance
(1)1The monitoring of publicly accessible spaces by means of optical-electronic devices (video surveillance) and the further processing of the personal data thereby collected shall be lawful insofar as they are necessary for the performance of a task in the public interest and there are no indications that the legitimate interests of the persons affected by the video surveillance outweigh. 2The performance of a public task shall also include
(2)the protection of persons belonging to or visiting the monitoring body,
(3)the protection of property belonging to the monitoring body or to the persons referred to in number 1, and
(4)the exercise of the right of domiciliary control of the monitoring body.
(5)3Data collected pursuant to sentence 1 may only be processed for a different purpose insofar as this is necessary to avert a concrete danger to public security or to prosecute criminal offences; § 6(5) shall apply mutatis mutandis.
(6)1The video surveillance shall be made recognisable by appropriate measures at the earliest possible point in time. 2In addition, the name and contact details of the controller as well as the possibility of obtaining the information pursuant to Article 13 of the General Data Protection Regulation from the controller shall be indicated.
(7)When seeking the advice of the data protection officer on video surveillance pursuant to Article 35(2) of the General Data Protection Regulation, the public body shall in particular communicate the purpose, spatial extent and duration of the video surveillance, the circle of persons affected, the measures pursuant to paragraph 2 and the intended evaluations.