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Tracking & Cookies ​

Dalton uses a small set of first-party cookies and browser storage to provide consistent A/B testing experiences and measure experiment performance. Nothing is shared across domains and no personal data is stored.

A/B Testing Cookies ​

Dalton automatically detects consent and supports almost all cookie banners out-of-the-box. Cookies are only written once analytics/performance consent is granted. Anonymous experiment data is held in browser storage (localStorage/sessionStorage) so the experience stays consistent during the session, even before cookies are accepted.

Essential Cookies for A/B Testing ​

Dalton sets the following first-party cookies (Secure, SameSite=Lax), only after analytics consent, to keep user experiences consistent during testing:

dalton_session_id_<customer_id> ​

  • Purpose: Anonymous session identifier for experiment consistency
  • Type: Analytics / performance cookie for A/B testing
  • Data Stored: Random session ID plus the experiment/variation IDs the visitor is enrolled in (no personal information)
  • Expiration: 24 hours
  • 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: Analytics / performance cookie for A/B testing
  • Data Stored: Random device ID (no personal information)
  • Expiration: 24 hours
  • Domain: Your website domain

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

Looking for the full technical reference?

See Cookies & Storage for every cookie and storage key, consent integration, and the domains to allow in your Content Security Policy.

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.