Discrepancies between QR platform scan counts and Google Analytics session counts are expected due to differing measurement methodologies.
Key reasons for variance
- Redirect vs Pageview: ScanOrbit logs the scan immediately upon redirect. If a user closes the browser before your website fully loads, Google Analytics may not record the session.
- Ad Blockers: Privacy extensions and browser tracking blockers often block Google Analytics scripts while allowing standard URL redirects to function.
- Session Consolidation: Google Analytics groups multiple page interactions within a 30-minute window into a single session, whereas ScanOrbit counts each physical scan.
- Bot Filtering: Preview crawlers (from messaging apps like iMessage or WhatsApp) may trigger a scan event while being filtered out by GA4.