KUID

The KUID is the unique identifier of users in Salesforce Audience Studio. It is an abbreviation for Krux User ID. 

In cookie-based environments the KUID is always an 8-character ID with uppercase letters, lowercase letters, numbers and special characters. For active users, the life of a cookie is 180 days. If a cookie is inactive for 90 days, it will be deleted from the Audience Studio instance. This is based on a default 90 day look back. Activity can be received from the websites (pixel.gif), media impression (ad_impression.gif or click_track.gif) or event (event.gif)

Examples are based on a default 90 day look back: 

  • A user visits an Audience Studio client website on day 1 and receives cookie1 with a KUID. If the user is seen by another Audience Studio tag (website visit, media, event, etc.) on day 79, then cookie1 and associated KUID will persist
  • A user visits an Audience Studio client website on day 1 and receives cookie1 with a KUID. If the user is seen by another Audience Studio tag (website visit, media, event, etc.) on day 95, the user will be given a new KUID, cookie2, on day 95
  • A user visits an Audience Studio client website on day 1 and receives cookie1 with a KUID. Cookie1's consent flags have been disabled on day 10; all consent flags are 0. Client website will no longer see activity from Cookie1. Cookie1 will age out in 90 days
  • A user visits two different Audience Studio client sites, ClientA website A and ClientB websiteB and receives cookie1 with a KUID. cookie1 visits websiteA on day1 and day95. However, cookie1 visits websiteC on day 85. cookie1 will persist past 90 days
The default look back associated to your account may vary, depending on your contract license. Please contact your Salesforce representative for more details. 

In cookie-less environments we use the Android AdID, the Apple IDFA, OTT device ID or a proprietary hashed device ID, e.g. in Safari.

For some partners that require an exclusively lowercase ID, we additionally offer a lowercase-only 9-character ID called "user".

Please ask the Support team if you need to know how to access your respective user IDs on page.

 

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