Use of reCAPTCHA

In order to protect input forms on our site, we use the “reCAPTCHA” service of Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043 USA, hereinafter "Google." By means of this service it can be distinguished whether the corresponding input is of human origin or is created improperly by automated machine processing.
To our knowledge, the referrer URL, the IP address, the behaviour of the website visitors, information about the operating system, browser and length of stay, cookies, display instructions and scripts, user input behaviour and mouse movements in the “reCAPTCHA” checkbox are conveyed to “Google.”
Google uses the information obtained, among other things, to digitize books and other printed matter as well as to optimize services such as Google Street View and Google Maps (e.g. house number and street name recognition).
The IP address provided as part of “reCAPTCHA” is not merged with other data from Google unless you are logged into your Google Account at the time the "reCAPTCHA" plug-in is used. If you want to prevent this transmission and storage of data by “Google” about you and your behaviour on our website, you must log out of “Google” before you visit our site or before using the reCAPTCHA plug-in.
The use of the “reCAPTCHA” service is according to the Google Terms of Use:
https://www.google.com/intl/de/policies/privacy/.