Most schools already have an ID scanner at the entrance to every building, some even use their IDs as a stored-value system for purchases on (or even off) campu

Most schools already have an ID scanner at the entrance to every building, some even use their IDs as a stored-value system for purchases on (or even off) campus. They already know every time you enter a building, log on to a campus PC, do your laundry. With that combined with CCTV all over campus, how does this actually make things worse for the student?