Guidelines 03/2019 on processing of personal data through video devices
SECTION 10 DATA PROTECTION IMPACT ASSESSMENT
136. According to Article 35 (1) GDPR controllers are required to conduct data protection impact assessments (DPIA) when a type of data processing is likely to result in a high risk to the rights and freedoms of natural persons. Article 35 (3) (c) GDPR stipulates that controllers are required to carry out data protection impact assessments if the processing constitutes a systematic monitoring of a publicly accessible area on a large scale. Moreover, according to Article 35 (3) (b) GDPR a data protection impact assessment is also required when the controller intends to process special categories of data on a large scale.
137.The Guidelines on Data Protection Impact Assessment provide further advice, and more detailed examples relevant to video surveillance (e.g. concerning the “use of a camera system to monitor driving behaviour on highways”). Article 35 (4) GDPR requires that each supervisory authority publish a list of the kind of processing operations that are subject to mandatory DPIA within their country. These lists can usually be found on the authorities’ websites. Given the typical purposes of video surveillance (protection of people and property, detection, prevention and control of offences, collection of evidence and biometric identification of suspects), it is reasonable to assume that many cases of video surveillance will require a DPIA. Therefore, data controllers should carefully consult these documents in order to determine whether such an assessment is required and conduct it if necessary. The outcome of the performed DPIA should determine the controller’s choice of implemented data protection measures.
138. It is also important to note that if the results of the DPIA indicate that processing would result in a high risk despite security measures planned by the controller, then it will be necessary to consult the relevant supervisory authority prior to the processing. Details on prior consultations can be found in Article 36.