Privacy Policy

1. Overview and Scope

This Privacy Policy governs your use of LightBrightness.com. We provide free, public educational tools including 3D WebGL lighting simulators, photometric calculators, and camera-assisted optical lux meters.

By visiting or using any of our tools, you agree to the collection and use of information in accordance with this policy.

2. Device Camera and Hardware Sensor Access

Our Camera Lux Meter requests explicit browser permission (navigator.mediaDevices.getUserMedia) to read real-time ambient lighting. We adhere to the following principles:

• Local In-Memory Extraction: Raw video frames are rendered to a hidden HTML5 <canvas> where pixel luminance values are sampled using the CIE 1931 photopic curve.
• No Cloud Uplink: We operate no backend endpoints or APIs capable of receiving, inspecting, or storing video streams or images. All mathematics occur client-side.
• Revocable at Any Time: You may deny camera permissions or revoke them in your browser settings at any moment.

3. Information We Collect

We do not require user registration, accounts, passwords, or credit cards. We collect only the minimum technical data necessary to operate and secure the website:

4. Cookies and Local Storage

LightBrightness.com does not deploy invasive cross-site advertising tracking cookies. We may use your browser's standard localStorage solely for functional preferences:

• Remembering your light or dark mode theme preference.
• Remembering your last selected room type or slider units in the 3D Simulator.
• Storing sensitivity calibration multipliers in the Camera Meter between browser sessions.

You can clear your browser's local storage or cookies at any time via your browser settings without impacting core tool availability.

5. Third-Party Services and Fonts

To maintain visual readability and performance, we load typography via Google Fonts CDN. These requests are governed by Google's privacy policy. No user identifiers or cookies are shared with third parties for marketing purposes.

6. Your Rights (GDPR, CCPA & CalOPPA)

Depending on your jurisdiction (such as the European Economic Area or California), you may hold the following statutory data rights:

• Right of Access: Inquire whether we hold personal data about you (such as past contact form correspondence).
• Right to Rectification & Erasure: Request the correction or deletion of your email messages from our support inbox.
• Right to Non-Discrimination: We do not sell user data, nor do we discriminate against any user exercising their privacy rights.

To exercise any of these rights, email our Data Protection contact at [email protected]. [email protected].

7. Children's Privacy (COPPA)

LightBrightness.com is a general audience engineering and education website and does not knowingly collect or solicit personal information from children under the age of 13.

8. Updates to this Policy

We may occasionally update this Privacy Policy to reflect changes in our technical tools or legal obligations. Continued use of the Site after changes constitutes acceptance.