§ 20 BlnDSG
Video Surveillance
(1)The processing of personal data in publicly accessible spaces by means of optical-electronic devices (video surveillance) shall be permissible insofar as it is necessary for the fulfilment of a task in the public interest or for the exercise of the right of domiciliary control and there are no indications that the legitimate interests of the data subjects prevail.
(2)Areas subject to video surveillance shall be marked in such a way that persons are informed of the video surveillance and the name and contact details of the controller before entering.
(3)Processing for other purposes shall only be permissible insofar as this is necessary for the prevention of threats to public safety or for the prosecution of criminal offences.
(4)For the processing of personal data from publicly accessible spaces of public local transport, by derogation from paragraph 3, the following shall apply: 1. such data may only be processed for another purpose insofar as this is necessary for the prevention or prosecution of criminal offences, and 2. transmission for this purpose shall only be permissible to the Berlin Police and to the criminal prosecution authorities. The controller shall, by means of a security concept to be coordinated with the Berlin Police, ensure that recordings are deleted no later than 72 hours after being made, unless their retention is necessary for one of the purposes referred to in sentence 1 no. 1.
(5)Without prejudice to the controller's obligation to erase data on the basis of other provisions, personal data collected pursuant to paragraph 1 shall be erased without undue delay where the legitimate interests of the data subject preclude further storage. zur Einzelansicht § 20