I'd guess that people who are willing and able to afford hiring someone to cheat for them in an exam, can probably also order a fake ID with their name and the photo of their exam-taker.
Though maybe an extra step of storing a copy of the ID with the exam entry and having a professor who knows them verify that it matches the real student would catch most of that...
Though maybe an extra step of storing a copy of the ID with the exam entry and having a professor who knows them verify that it matches the real student would catch most of that...