Authentic sources are data concerning you which are held by the administrations. This data is retrieved from official registers and files.
They are updated each time your personal situation changes throughout your life.
You can find most of this data in your "private eSpace" on MyGuichet.lu, in the "My data" section.
The implementation of these authentic sources allows you to pre-fill your administrative procedure forms so that you do not have to provide the same information again and again to the administrations concerned.
For the administration, more effective data sharing reduces the administrative workload: fewer incomplete files, and erroneous or missing data.
None of this data is stored on MyGuichet.lu. Your "private eSpace" is strictly confidential. Various safety measures are in place to prevent your data from being viewed by any third parties.