If you don't have access to your emails on your smartphone but have been asked to go through a driver's license check, that's not a problem.
A QR code is integrated in every e-mail requesting a driver's license check.
You can scan this with your smartphone.
Use the "Camera" app for this and hold the camera in front of the QR code. A link to the driver's license control will open automatically.
You can now start the driver's license check.