FewCookies

Cookie glossary · Marketing

What is the UID cookie?

comScore cookie storing a unique user identifier used for cross-site audience measurement and advertising targeting. It is set by comScore and classified as "Marketing". Requires consent.

At a glance

Provider comScore
Category Marketing
Consent required? Yes
Typical domain .scorecardresearch.com

How FewCookies handles this cookie

FewCookies recognises UID from our database of 1,300+ known cookies and classifies it automatically as "Marketing". The free check tells you whether this cookie is detected on your site and whether your banner handles it correctly — an instant, surface-level check, no account needed.

Check your site for free →

Frequently asked questions

Do you need consent for the UID cookie?

Yes. UID is a "Marketing" cookie, so it is not strictly necessary. Under the ePrivacy Directive (2002/58/EC) and Romania's Law 506/2004, you must obtain the visitor's explicit consent before setting it.

What does the UID cookie do?

comScore cookie storing a unique user identifier used for cross-site audience measurement and advertising targeting.

Who sets the UID cookie?

The UID cookie is associated with comScore and is classified as marketing.