The profile key is an identifier for the person browsing your website who is initiating the navigation requests. This same identifier should also be used to identify the visitor when sending events to our Analytics API. Based on the sent events, the visitor can receive personalized results.
The profile key can be any string as long as it is unique to the visitor. Generate for example a Universally Unique Identifier (UUID), a new id per visitor or use an account id.
Example: ff106b0a-b5bf-43fc-945c-318f17cda425