Foto de stock - 29 September 2021, North Rhine-Westphalia, Duisburg: View of the Boarding Pass App for the ""3G"" proof of students at the University of Duisburg-Essen. For thousands of students, the new winter semester 2021/2022 will start again at the NRW universities on 01.10.2021 with a lot of presence and the ""3Gs"". After three semesters of digital or hybrid teaching under corona conditions, this will be the first time in a long time that many students will see the inside of the university building again. In return, they have to show that they have been vaccinated, have recovered or have been tested. Photo: Rolf Vennenbernd/dpa. - Duisburg/North Rhine-Westphalia/Germany

Imagen: 29 September 2021, North Rhine-Westphalia, Duisburg: View of the Boarding Pass App for the ""3G"" proof of students at the University of Duisburg-Essen.

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