Privacy Policy
1. Information We Collect
OpenSTEM is an open-access platform. You are not required to create an account or provide personal identification to read our textbooks or run our simulations. However, we automatically collect certain technical information when you navigate our services:
- Log & Device Data: Browser type, operating system version, referring URL, time spent on chapters, and anonymized IP addresses for security diagnostics.
- Local Storage: Your reading session progress, chapter preferences, and study break timer state are stored locally within your personal browser storage (localStorage) and never transmitted to our servers.
2. Google AdSense & Third-Party Advertising Policy
To keep all university textbooks, derivations, and interactive simulations 100% free for students worldwide, OpenSTEM displays advertisements served by Google AdSense and authorized Google ad network partners.
• Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites on the internet.
• Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to our sites and/or other sites on the Internet.
• Users may opt out of personalized advertising by visiting Google Ads Settings.
Alternatively, users can opt out of a third-party vendor's use of cookies for personalized advertising by visiting www.aboutads.info.
3. Cookies and Web Beacons
Cookies are small text files stored on your device. We and our advertising partners use cookies to:
- Measure the performance and viewability of educational sponsorships.
- Prevent ad fraud and ensure brand safety.
- Deliver non-intrusive, relevant academic and STEM career announcements.
4. GDPR Compliance (European Economic Area Users)
If you reside within the European Economic Area (EEA), the General Data Protection Regulation (GDPR) grants you specific rights regarding your personal data:
- The right to access, rectify, or erase any personal information.
- The right to restrict or object to automated data processing.
- The right to withdraw cookie consent at any time through your browser privacy settings.
5. CCPA / CPRA Compliance (California Residents)
Under the California Consumer Privacy Act (CCPA), California residents have the right to know what categories of personal information are collected and to request that their data not be sold. OpenSTEM does not sell user personal data.
6. Children's Privacy (COPPA Compliance)
Our educational resources are designed for university and secondary education. We do not knowingly collect personal identifiable information from children under the age of 13. If you believe a child has provided us with personal information, please contact us immediately for deletion.
7. Contact and Inquiries
If you have any questions or feedback regarding this Privacy Policy or our educational data practices, reach out directly to the author and editorial team: