id property

String? id
getter/setter pair

id The unique visitor ID, must be a 16 characters hexadecimal string. Every unique visitor must be assigned a different ID and this ID must not change after it is assigned. If this value is not set Matomo (formerly Piwik) will still track visits, but the unique visitors metric might be less accurate. Corresponds to _id in https://developer.matomo.org/api-reference/tracking-api

Implementation

String? id;