Segment sets 2 cookies on websites that load its scripts. Below is the full list with purpose, expiry, and whether each one needs GDPR / ePrivacy consent.
ajs_anonymous_idAnalyticsExpires: 1 yearSegment-generated anonymous visitor identifier. Used to attribute events from non-logged-in users to a stable ID across sessions before they identify.
ajs_user_idAnalyticsExpires: 1 yearSegment user identifier set after a visitor calls analytics.identify(). Used to forward identified events to downstream tools (Mixpanel, Amplitude, etc.).
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