Last updated: 25 June 2026
Lessesity (at lessesity.com) is operated by 3IVIS GmbH, Berlin, Deutschland (HRB 170881, Amtsgericht Charlottenburg). For our full legal details see the Imprint.
We are the data controller within the meaning of the EU General Data Protection Regulation (GDPR).
Lessesity is a static educational reference site. We do not have user accounts, do not collect your name or email address, and do not process any personally identifiable information directly.
With your prior consent, we use Google Analytics 4 (property ID: G-V1ZTC41MFN) to collect anonymised usage statistics, including:
This data helps us understand which content is most useful so we can improve the site. Analytics are only activated after you give consent via the cookie banner.
We use two types of cookies:
Remembers your cookie preference for 365 days. This is set as soon as you interact with the consent banner. It is strictly necessary for the banner to function correctly and is not used for tracking.
Set by Google if you accept analytics. These cookies collect anonymised usage data. They are only loaded after explicit consent. You can withdraw consent at any time using the cookie settings button at the bottom of any page.
If you accept analytics, your usage data is sent to Google Ireland Ltd (Gordon House, Barrow Street, Dublin 4, Ireland), acting as a data processor on our behalf. Google's data processing is governed by their Privacy Policy.
All fonts and CSS are served directly from our own server. No third-party CDN requests are made for these resources.
Google Analytics is processed on the basis of your freely given, specific, informed consent (Art. 6(1)(a) GDPR). You may withdraw consent at any time without any disadvantage — the site remains fully functional without analytics.
Anonymised analytics data is retained for 14 months in Google Analytics, after which it is automatically deleted. We do not retain any personal data ourselves.
Under the GDPR you have the right to:
To exercise any right, contact us via www.3ivis.com.
We may update this policy from time to time. Material changes will be reflected in the "Last updated" date above. We encourage you to review this page periodically.