To evaluate and support online marketing measures, we use the “visitor action pixel” of Facebook, Inc., 1601 S. California Ave, Palo Alto, CA 94304 , USA (“Facebook”). This allows us to track users’ actions after they have seen or clicked on a Facebook ad. In this way, we can measure the effectiveness of Facebook ads for statistical and market research purposes. The data collected in this way is anonymous for us, which means we don’t see individual users’ personal data. However, this data is saved and processed by Facebook, about which we inform you to the best of our knowledge. Facebook can link this data to your Facebook account and also use it for its own advertising purposes in accordance with Facebook’s Data Policy ( You can enable Facebook and its partners to display ads both on and off Facebook. A cookie may also be saved on your computer for these purposes.