Privacy Policy

1. Information We Collect

EI Signal Stories collects the following information to provide our services:

• Account Information: Email address and name from your Google or Microsoft account when you sign in.
• Content You Provide: Research papers, text, PDFs, and URLs you submit for story generation.
• Generated Visual Assets: AI-illustrated scene images, key insights cards, and animated video files created from your stories.
• Usage Data: Stories created, visual assets generated, preferences, and interaction with our service.
• Technical Data: Browser type, device information, and IP address for security purposes.

2. How We Use Your Information

• To generate stories from your research content using AI
• To authenticate and secure your account
• To process payments and manage subscriptions
• To improve our service and develop new features
• To communicate important updates about your account

3. AI Content Processing

EI Signal Stories uses AI to generate stories, illustrations, and videos from your research content:

• Your content is processed by AI providers to generate text stories, scene illustrations, key insights cards, and animated videos
• Generated stories and visual assets are stored in your account library so you can access them later
• Premium users' stored content is encrypted using their personal PIN
• For video generation, your story text is sent to third-party AI video and audio providers; we do not share your original source material with these providers — only the generated story narrative
• Generated images and video frames are stored on our servers and are accessible only to you (and anyone you share the story link with)
• Content processing is subject to our AI providers' privacy policies
• We use industry-standard encryption for all data in transit and at rest

4. Data Security

We implement industry-standard security measures including:

• HTTPS encryption for all data transmission
• Secure OAuth 2.0 authentication via Google and Microsoft
• Rate limiting and brute force protection
• Regular security audits and monitoring

5. Data Sharing

We do not sell your personal information. We may share data with:

• AI Providers: Your content is processed by AI providers for story generation
• Payment Processors: Your payment information is handled securely by trusted payment gateways
• Legal Requirements: When required by law or to protect rights

6. Your Rights

You have the right to:

• Access your personal data
• Request deletion of your account and data
• Export your stories and content
• Opt out of marketing communications

7. Cookies & Browser Storage

We use two categories of cookies. For full details, see our Cookies Policy.

• Essential cookies — httpOnly, Secure, SameSite=Strict cookies for authentication (NextAuth session tokens) and PIN verification. These are required for the service to function and cannot be disabled.
• Analytics cookies — Google Tag Manager (GTM-N548RG8Z) loads Google Analytics 4 to collect anonymised usage data: page views, feature clicks, and story creation events. We do not collect the content of your research text or stories through analytics. You can opt out via the Google Analytics Opt-out Add-on.
• SessionStorage (not cookies) — browser memory cleared on tab close. Used to remember your PIN unlock status within a session and to preserve your filmstrip card selection across login redirects. This data never leaves your device.

We do not use advertising cookies, retargeting pixels, or third-party social media tracking.

8. Contact Us

For privacy-related questions or requests, contact us at: support@ei4aibooks.com

9. Changes to This Policy

We may update this policy periodically. We will notify you of significant changes via email or through our service.