UserID1 cookie: what it does, who sets it, consent category

UserID1 cookie

Marketing cookie set by Adition, lasting 180 days.

Is UserID1 firing on your site before anyone says yes?

Conzent holds UserID1 and every other marketing cookie until the visitor accepts, and Consent Mode v2 keeps your Google Ads and GA4 reporting accurate. Registered IAB TCF CMP, Google-certified. From €7 per site a month.

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What the UserID1 cookie does

Cookie sets a unique anonymous ID for a website visitor. This ID is used to recognize the user on different sessions and to track their activities on the website. The data collected is used for analysis purposes.

Who sets it

Adition — privacy policy

Consent category: marketing

Marketing cookies follow visitors across sites to build advertising profiles and to measure campaigns. They always require prior consent, and a consent banner has to block them until the visitor agrees.

Name	`UserID1`
Category	Marketing
Lifetime	180 days
Set by	Adition

Is this cookie on your site?

Conzent's scanner lists every cookie your site sets, classifies each one the way this page does, and shows which are set before the visitor has consented. Try Conzent free for 14 days, or look up another cookie.

From the Conzent cookie database, last updated 2026-11-12. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.