> For the complete documentation index, see [llms.txt](https://docs.elevateab.com/elevate-helpcenter/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.elevateab.com/elevate-helpcenter/analyze/tracking/cookies-and-consent.md).

# What Cookies Does Elevate A/B Testing Set?

Which cookies and storage keys Elevate A/B Testing sets on your Shopify store, and which ones wait for cookie consent when consent is required.

Elevate A/B Testing sets a small number of cookies and browser storage keys on your Shopify storefront. They keep each visitor in the same experiment variation and link visits to experiment results. Elevate A/B Testing does not store names, email addresses, phone numbers, or physical addresses.

## Main cookies and storage keys

| Name             | Type           | Lifetime             | Purpose                                               | Waits for consent when required |
| ---------------- | -------------- | -------------------- | ----------------------------------------------------- | ------------------------------- |
| `eabUserId`      | Cookie         | 1 year               | Anonymous visitor ID                                  | Yes                             |
| `basicEabUserId` | localStorage   | Until cleared        | Anonymous visitor ID                                  | Yes                             |
| `eabSessionId`   | sessionStorage | Until the tab closes | Session ID                                            | Yes                             |
| `ABTL`           | Cookie         | 1 year               | Which variation the visitor is in for each experiment | No                              |
| `ABAU`           | Cookie         | 1 year               | Which experiments the visitor has seen                | No                              |

A 1-year cookie expires 365 days after Elevate A/B Testing last writes it.

Elevate A/B Testing also sets helper keys, most starting with `eab`, for audience exclusions, Split URL and theme experiment redirects, custom triggers, and visit context such as the landing page and country. These are set before consent. The `ABRT` cookie is set only when the Klar integration is on.

## How to store visitor IDs only after cookie consent

By default, Elevate A/B Testing sets all of these when a visitor arrives, before the visitor makes a cookie consent choice.

To hold back the visitor and session IDs (`eabUserId`, `basicEabUserId`, and `eabSessionId`) until the visitor accepts analytics in your cookie consent banner, go to **Settings**, then **Store Setup**, then **Tracking**, and turn on **Require Consent Before Storing Visitor IDs**.

* The variation cookies `ABTL` and `ABAU` are still set before consent, so experiments keep running and each visitor keeps their variation.
* Elevate A/B Testing reads consent from Shopify's Customer Privacy API. Use Shopify's cookie banner, or a banner app that records consent with Shopify.
* Turn the setting on only if your experiments were created after September 29, 2026. Older experiments cannot track visitors reliably with it on.
* The setting does not cover headless storefronts built with Hydrogen, Next.js, or Remix.

See [Experiment and Store Settings](/elevate-helpcenter/advanced-settings/experiment-and-store-settings.md) for everything the setting changes, and [Web Pixel](/elevate-helpcenter/analyze/tracking/web-pixel.md) for what visitor data Elevate A/B Testing collects.