If your ID is no longer legible (i.e. the imprint, your photo, etc. is no longer recognizable), the current validity (from the validation terminal) cannot be printed and a visual inspection of the ID by the inspection staff is no longer possible.
The majority of the transport companies can read the ticket electronically. The main modes of transport, in particular HAVAG, Deutsche Bahn, LVB, etc., are equipped with electronic reading devices. However, a few small modes of transport can only carry out the visual inspection. If the readability is poor, the control personnel are advised to inform you that you should get a new ID in the SSC due to the poor readability. If legibility is not possible due to the state of the ID, a so-called increased transportation fee (EBE, 60 €) is due. This EBE will be reduced to € 7 if you have your ID electronically read out within the payment period.
You also have a problem with the visual inspection of a badly worn ID card in the cinema, zoo, etc. ... wherever you get a discount when you present your student ID card. In this case you should get a new ID from your university. For this purpose, the universities are obliged to collect an amount of € 10.30 in accordance with the Saxony-Anhalt State Fee Schedule.