The Data Protection Commissioner of Nordrhein-Westfalen and a regional consumer organisation (Verbraucherzentrale Nordrhein- Westfalen) have published a booklet on self-data protection and data economy. The booklet provides details of the privacy risks of scoring, credit agencies, social networks and fitness trackers. It also makes recommendations for precautionary measures such as deactivating cookies, carefully reviewing privacy policies, requesting information from companies or the eventual withdrawal of consent.

Self-data protection booklet (in German)