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description: "How Dalton uses cookies and tracking technologies to deliver consistent A/B testing experiences and measure performance."
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# Tracking & Cookies

Dalton uses cookies and tracking technologies to provide consistent A/B testing experiences and measure experiment performance. 
## A/B Testing Cookies

### Automated Integration with your Cookie Banner

Dalton automatically detects consent and supports almost all cookie banners out-of-the-box. Only when analytics consent is given, cookies are saved in the browser.
Session storage is used to save an anonymous session ID and provide the user with a seamless site-experience during the session.

### Essential Cookies for A/B Testing

Dalton sets the following cookies to ensure consistent user experiences during testing:

#### `dalton_session_[id]`
- **Purpose**: Anonymous session identifier for experiment consistency
- **Type**: Essential for A/B testing functionality
- **Data Stored**: Random alphanumeric identifier (no personal information)
- **Expiration**: 100 days
- **Domain**: Your website domain

This cookie ensures that users see the same test variation throughout their session, preventing inconsistent experiences that could skew test results.

#### `dalton_device`
- **Purpose**: Anonymous device identifier for consistent experiences across visits
- **Type**: Essential for A/B testing functionality  
- **Data Stored**: Random device fingerprint (no personal information)
- **Expiration**: 100 days
- **Domain**: Your website domain

This cookie maintains experiment consistency for returning visitors, ensuring they continue to see the same variation across multiple sessions.

## Data Collection Principles

### What We Collect
- **Anonymous identifiers**: Random strings to maintain test consistency
- **Experiment participation**: Which tests a user is enrolled in
- **Variation assignment**: Which version of a test the user sees
- **Conversion events**: Anonymous goal completions and interactions

### What We DON'T Collect
- **Personal information**: No names, emails, IP-addresses or identifying data
- **Cross-site tracking**: Cookies are limited to your domain only

### Action tracking

Dalton collects anonymous click events & conversions on your web pages. Scroll events are only tracked on pages that have live experiments.
These action events are linked to the anonymous session and device IDs.