Preserved archive

Pleisty (2011–2024) built AI that understood each shopper individually, at scale. Its founder carries that foundation forward at Kidfriendly

Identifying Anonymous Users


Pleisty is tracking website users based on Anonymous User IDs (AUIDs) stored in cookies.

In order to link the anonymous user id to a real user (identified by email / CRM user ID), it is required to receive, once per AUID's lifetime, information about the user's identity. This can be achieved in two ways:

  • On site identification via JavaScript
  • Pseudo-login via URL

On site identification via JavaScript

Sending the customer_id via the JavaScript api allows linking an AUID to a real user in your database. It is recommended to use the email address as customer_id, for an easier transition from non registered customers to registered.

The user identification API call is documented here: https://www.pleisty.com/docs/javascript-tracker-installation#3-Identifying-Users

Pseudo-login via URL

It is possible to simulate a login for a user coming to your site from an external system by adding the pleisty_u paramerer to the URL: http://example.com?pleisty_u=CUSTOMER_ID

If you use the email address as CUSTOMER_ID, the URL will look like this: http://example.com?pleisty_u=john@gmail.com

As a best practice, add this url parameter to all newsletter links sent from external systems (ex: logo link, footer links, other links), so your users will be properly identified when they land on your shop.

Questions about Pleisty?

Pleisty Support can help with installation and campaign setup.

Contact support