Information given for tracking purposes is used to prepare usage data, demographic profiling and statistical analyses. On a job application form, for example, information on your ethnic background is often collected for tracking purposes (e.g. so the company can say 'we have a strong record in employing ethnic minorities'). This information would not be used in appraising your application (that's the theory, anyway...). A similar disclaimer in Dutch would be something along the lines of "deze gegevens worden alleen gebruikt voor statistische doeleinden".