Cross-source identity spine
Last updated 2026-06-14
Definition
The identity spine is how Quri decides two events belong to the same person. The Quri Tag drops a stable ID, then matches anonymous browsing to a known email once someone identifies. That link is what lets Atlas join a Meta click, a GA4 session, and a Shopify order into one real customer.
How to do this in Quri
- Add the Quri Tag to your marketing site so anonymous visits get a stable ID.
- Send Quri an email on identify or signup so the anonymous ID binds to a person.
- Connect your other sources so their events can join onto that same person.
- Check /app/atlas/users to confirm sessions and orders are landing on one profile.
Frequently asked
- How does the spine link anonymous activity to a real person?
- The Quri Tag tags each browser with a stable ID. When that browser later identifies — a signup or an identify call carrying an email — Quri binds the earlier anonymous events to that person.
- Can the spine match someone across two different devices?
- Only once both devices share a known signal, like the same logged-in email. Two devices that never identify stay separate. Quri links what it can prove, not what it guesses.