So I don't even see the point in taking attendance (and as far as I remember at my university in the UK lecturers didn't even take attendence), but if you do, w

So I don't even see the point in taking attendance (and as far as I remember at my university in the UK lecturers didn't even take attendence), but if you do, what's wrong with taking a register at the beginning? It's probably cheaper, less error prone and the teach can use their discretion if a student is a little late to class because of ~reasons~.