Browser based user identification

摘要

An online behaviour tracking system includes a unique ID module configured to determine attributes of a user device, and calculate a unique ID for a user from the attributes. The unique ID is used to track online 5 behaviour for the user across different domains. Also, the online behaviour tracking system is used in a content evaluation system which delivers content treatments to users and tracks online behaviour of the users in response to the delivered treatments. zo 0z T Of z