Cherry Seed

Why is client-side tracking losing accuracy?

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Quick Answer

Client-side tracking relies on JavaScript and cookies running in the visitor's browser — and that environment is increasingly hostile. Ad blockers (used by 32.5% of users globally) block analytics scripts entirely. Safari wipes cookies after 24 hours. iOS strips click identifiers like gclid and fbclid. Consent banners suppress tracking for non-consenting visitors. The result: businesses miss 20-40% of their actual conversion data through client-side methods alone.

Full Answer

Client-side tracking runs in browsers where users control blocking, privacy settings, and script execution. The environment is hostile to tracking: 32% use ad blockers, Safari limits cookies to 7 days, and browser privacy features increase yearly. Data loss from client-side tracking is accelerating. The Client-Side Architecture Problem How Client-Side Works Vulnerability: Every step can fail or be blocked. Points of Failure 1. Script Loading

  • Ad blockers prevent script download (32% of users)
  • Slow connections delay script execution
  • JavaScript errors halt tracking
  • Content Security Policies block 3rd-party scripts 2. Cookie Setting
  • Safari ITP limits cookies to 7 days
  • Firefox Enhanced Tracking Protection blocks tracking cookies
  • Users delete cookies manually
  • Private browsing blocks persistent cookies 3. Pixel Firing
  • Privacy Badger blocks tracking pixels
  • Network issues prevent pixel requests
  • CORS policies block cross-domain requests
  • DNS-level ad blockers (Pi-hole) block tracking domains...

Sources

Programmatic Access

GET https://seresa.io/wp-json/cherry-tree-by-seresa/v1/seeds/199

Cite This Answer

Cherry Tree by Seresa - https://seresa.io/seed/platform-comparisons/client-side-limits