1. Overview & Commitment
Study Hour (https://studyhour.pages.dev) is dedicated to protecting the privacy and confidentiality
of our readers, researchers, and laboratory members. This policy explains how information is collected, utilized,
and safeguarded when you visit our publication.
2. Google AdSense & Third-Party Advertising Disclosures
Study Hour may partner with third-party advertising networks, including Google AdSense, to serve advertisements when visitors browse our articles. Please review the following mandatory disclosures:
- Third-Party Vendor Cookies: Google and other third-party vendors use cookies to serve ads based on a user's prior visits to this website or other websites across the Internet.
- DoubleClick DART Cookie: Google's use of advertising cookies enables it and its partners to serve ads to our users based on their visit to Study Hour and other sites on the Internet.
- Opt-Out Rights: Users may opt out of personalized advertising by visiting Google Ads Settings. Alternatively, visitors can opt out of third-party vendor use of cookies for personalized advertising by visiting www.aboutads.info.
3. Information Collected Automatically
When you access Study Hour, edge servers (via Cloudflare Pages) automatically record standard technical connection data, including:
- Internet Protocol (IP) address
- Browser type and version
- Operating system architecture
- Referring webpage and timestamp
- Requested URI paths and HTTP status codes
This technical data is used solely for security monitoring, DDoS mitigation, and edge cache performance optimization.
4. Payment Gateway & Hardware Vault Kit Data
When purchasing a Paid Hardware Vault Kit:
- All credit card numbers, billing addresses, and payment credentials are processed directly by certified PCI-DSS Level 1 payment processors (e.g., Stripe, Gumroad).
- Study Hour servers never see, collect, or store your raw payment details or credit card numbers.
- Upon successful checkout, our Edge Worker receives a cryptographically signed HMAC-SHA256 download token to deliver the requested ZIP archive.
5. Local Storage Utilization
Study Hour uses browser localStorage strictly for client-side state preservation, including:
- Recording whether you have clicked a laboratory reaction button (e.g.
studyhour_react_eureka). - Saving canvas simulation parameter presets.
No personally identifiable information is stored in local storage, and this data is never transmitted to external analytics brokers.
6. GDPR & CCPA Data Rights
Depending on your jurisdiction, you have the right to request access to, correction of, or deletion of any personal data we maintain. Because we do not maintain user accounts or persistent tracking profiles, we store minimal personal information.
To exercise your privacy rights, contact our Data Protection Officer at: privacy@studyhour.pages.dev.