Privacy Policy

Thank you for visiting the Kalliope Union Catalog, hosted by the Berlin State Library. We are committed to deal responsibly with the information provided by you, and to ensure the protection of your personal information. The Berlin State Library - Prussian Cultural Heritage Foundation does not collect personal information about visitors to this website unless you choose to provide that information to us. We use that information only to respond to your message and to help us get you the information you have requested. The following privacy policy will inform you of every aspect of our website that is relevant to data security.

Name and address of the responsible person

The person responsible corresponding to EU General Data Protection Regulation and other data protection regulations is:

Foundation of Prussian Cultural Heritage, legally represented by its president, Prof. Dr. Dr. hc. mult. Hermann Parzinger

Von-der-Heydt-Str. 16-18, 10785 Berlin, Germany


Privacy Officer:


Telefon (Zentrale): +49 (0)30 266 412889

Web Analytics Software

When you visit our website, we gather and store information about your visit automatically. Those data are used only to improve our website for your benefit. This information is used only for statistical purposes. There will be no further data usage, especially no passing on or selling data to third parties.

In order to protect personal data, we implemented the open source web analytics software PIWIK with a feature to automatically anonymize IP addresses (AnonymizeIP plugin). This ensures that the user data or user profiles cannot be linked to personal data.

Every time a user accesses a website or webpage and every time data is accessed, browsers usually transmit data. Of this data that is transferred when you visit our website, we collect and store the following anonymized information:

  • Type and version of web browser
  • Screen resolution
  • Operating system information
  • Referrer URL (URL of the previous page you visited)
  • Time of server request
  • Accessed page(s) and file(s)
  • Anonymized IP address
  • Country of origin

Cookies and the right to opt out of data collection by web analytics software Piwik

Cookies are small bits of information that are saved onto your computer when you visit a website. They allow the exchange of information between computer programs and, for a limited time, allow the information to be stored. You can set your browser to refuse cookies. Please note that, if you activate your web browser‘s option to automatically delete cookies, the deactivation cookie will also be deleted when you exit the program. In this case, the next time you access this website, you will need to opt out of the data collection again. To opt out press the link below ("Ihr Besuch dieser Webseite wird aktuell ...")

You may use our website effectively without the use of cookies. Our cookies have two different functions:

  1. One part of the cookies guarantees the website works and is displayed correctly. The validity of these cookies is limited to the duration of your visit to our website. When you exit your web browser, these so-called “session cookies” are deleted. One exception is the cookie that controls the display of the data protection information. This cookie is valid for three months so that this information does not appear every time you visit our website.
  2. The other cookies used with this website are part of the analysis software Piwik (see above).

Depending on whether you agreed to the collection of data or not, either two web analytics cookie or one Piwik deactivation cookie will be saved on your computer. The web analytics cookies expire when you exit the browser, while the Piwik deactivation cookie remains valid for two years, unless you delete it first.

German Library Statistics

The Berlin State Library, as part of its participation in the German Library Statistics, counts the visits to its website. Every time you access our homepage and/or catalog pages (“OPAC”), we save an identification code of the library as well as the respective website, the time of access and a signature of the requesting computer. With the help of a one-way function, the signature is created from the IP address, browser identification and proxy information. The collection, storage, and evaluation of these data is done in pseudonymized form, i.e. the signature cannot be traced back to a distinct person. The data, particularly the IP address, is not stored. After 24 hours, the pseudonymized individual data are summarized and, thus, completely anonymized. The Stuttgart Media University is commissioned to implement the procedure described above, which was developed in accordance with the statutory provisions of the German Data Protection Act and the German Broadcast Media Act (TMG), and commits to comply with these provisions. To object to the collection, processing, and use of such information about your visits for the above-mentioned purpose, please follow this link (German only).

All requests we receive via email or online form need to include certain information, so that we may contact you. Personal data, submitted via email or through our website, will solely be used for correspondence with you and is exclusively processed for the purpose you intended when submitting your request.

Should you have any further questions or suggestions on the subject data protection on our websites, please do not hesitate to contact us.