Cookieless tracking is a method of tracking website visitors without using cookies. Cookies are small text files that are stored on a user's computer and are used to remember information about the user, such as their preferences and past activity on the website.

Cookieless tracking, on the other hand, uses other methods to identify and track users, such as tracking pixels and device fingerprinting.

This can be useful for websites that want to track user activity without relying on cookies, which can be blocked or deleted by users.