I have given my GRE yesterday. At the starting of exam we have to take a picture of our face and passport. instead i took my pictures in both of them and after completing that my proctor has checked my passport in call and verified my name expire date and picture he didn't tell me my mistake. After completion of my test in a discussion i got to know about this. I asked couple of my seniors about this they told me not to worry. I called ETS customer service and explained my problem without giving my details they have told me that it might be a big problem they told me they will resolve