How Session-Based Tracking Works: Cookieless Architecture Explained
· 17 min read
TL;DR — How session-based tracking replaces cookies. Technical deep dive into Sealmetrics' architecture: hashing, token rotation, and data flow.
Introduction
The Problem: Google Analytics loses 15-60% of EU visitor data to cookie rejections and banner ghosting — where you land depends on your sector, brand strength and traffic sources. Cookieless analytics solves this by tracking without cookies, consent banners, or IP addresses.
What You'll Learn:
- How cookieless tracking actually works technically
- Why it captures the data cookie-based tools miss
- The session-based architecture behind Sealmetrics
- Implementation differences vs traditional analytics
- The legal position: why no Article 6 basis is required at all
Key Takeaways:
- Cookieless tracking uses session identifiers instead of persistent cookies
- Zero IP storage means no personal data processing (no consent needed)
- 24-month retention on aggregates that contain no personal data
- Sealmetrics captures what GA4 misses: ghosted users, cookie rejecters, Safari/Firefox visitors
For a complete overview of cookieless analytics, see our Cookieless Analytics: Complete Guide 2026.