_pin_unauth — Pinterest Tag
By the OpenCookies team · published 2026-10-22 · updated 2026-10-22
- Service
- Pinterest Tag
- Category
- Advertising and profiling
- Default duration
- 1 year
- Type
- First-party cookie (set by your own site)
- Consent required?
- Yes, before any storage or reading.
What is it for?
Identifies a logged-out visitor for the Pinterest tag, to measure ads and link actions on the site to a campaign.
What does it look like?
The value is a random string.
How to see it in your browser
Open your site, press F12, then choose the “Application” tab (Chrome, Edge) or “Storage” (Firefox). Under “Cookies”, select your site’s address: the _pin_unauth cookie appears in the list if present, with its value and expiry date.
What does the rule say?
Targeted advertising, remarketing and profiling require prior, free and informed consent. These cookies cannot be exempted.
How to prevent it before the choice
Do not load the Pinterest tag before consent.
How OpenCookies handles it
Common services like this one are in OpenCookies’ tracker list: the banner neutralizes their script before the visitor chooses and only restarts it after “Accept”. The test shows whether this cookie appears before the choice, after “Refuse” and after “Accept”.
Check it on my site
Does this cookie appear on your site before the visitor chooses? The OpenCookies test shows it in two minutes.
Related cookies
Frequently asked questions
What does “unauth” mean?
The visitor is not logged in to Pinterest: the cookie still identifies them.
Is it set by a “Save” button?
Pinterest tags and widgets set it depending on their configuration.
Durations are defaults and may change with configuration. This page describes a cookie; it is not legal advice.