Visitors and identity
Keep one visitor identity
Merge anonymous, signed-in, app, browser, and server activity safely.
Last updated August 20, 2026
Before you start
- A stable application user ID
- Tracking before and after authentication
How to do it
- 1
Track anonymously before sign-in so acquisition and early behavior are retained.
- 2
Read the Identify API, then call identify after authentication succeeds using the durable application identity.
- 3
Call reset before sign-out so the next person starts separately.
What to check
- Earlier anonymous activity merges into the signed-in profile
- A signed-out shared device does not leak identity to the next user