The previous student ID card for higher subject-related semesters currently has a photo and a so-called TRW (Thermo-Re-Write) strip (gray). Each new semester of enrollment was noted on this strip by the validator by printing a new semester date (validation).
For data protection and organizational reasons, there will no longer be a photo on the new student ID cards, as the university does not compare the photos. Furthermore, the student ID card is not an official proof of identification.
The TRW strip and the corresponding validators are also prone to errors and no longer meet today's technical standards. Due to further technical innovations and the use of the internal chip in the student ID card, the TRW strip is now no longer proof of enrollment.