I'm not exactly sure why facial recognition technology is needed in the classrooms. Surely the best facial recognition device is already in the classroom. It's called a teacher. If a teacher can't recognize his or her own students, then he or she needs to either go back to teacher college or consider another kind of job. The article above doesn't give very good reasons to implement facial recognition. It simply says, in short, "it exists, let's use it". That's not a very good reason.