Point 1) is important because due to the legislation in UK, students are obliged to scan their ID card at the barcode scanner in class to certify their presence at lesson. Just like employees at the supermarket. I feel that our system frees them to have to do that. The student positions are not visible unless there is an emergency and even in that case realtime viewer does not show any data on whom the student (or lecturer) is. It just shows to the firefighter that there is someone at the second floor in room 3A.
For what concerns point 2) you can think that we used anonymized positions as GPS navigators backend use the device traces to generate data about traffic jams, map corrections and so on. This data is used to improve campus life as it gives an idea how to distribute resources optimally. I remember that I was very frustrated as a student when I never seemed to find room in a computer lab while the classes adjacent where always very busy.