Place Datamatrices on the opposite side of the page from potential staples
Usually exams are printed double sided, but currently we place the datamatrix in the same position for each page (defaults to the top right)
Usually exams are stapled in the top-left corner. This means that odd pages have the datamatrix far away from the staple, but even pages have the datamatrix very close to the staple.
The recommended workflow when scanning is to cut off the corner with the staple. This allows multiple stapled exam copies to be scanned efficiently, however if someone is overzealous with the scissors they may cut off part of the datamatrix, rendering some of the exam pages unreadable by zesje. This would completely break the workflow.