You do not necessarily need any proof of identity, and you can skip this step in the web app. This verification of identity is recommended if you need a medical report that can also be used as an entrance test (“green passport”). If you skip the verification of identity or if this verification is interrupted, you will still receive the test result after the test procedure was concluded, but you will not receive any valid medical report (“green passport”) that entitles you to go to a hair salon or use any other, similar services.