"Schools did just fine without them for millenia." Yeah, they did fine without grades stored in a database, too. This is simply a way to take attendance in a

"Schools did just fine without them for millenia." Yeah, they did fine without grades stored in a database, too. This is simply a way to take attendance in a more efficient manner. Would you rather a teacher spend 5 minutes out of every class taking attendance or use a more efficient automated system. These things don't track every movement. They track whether people have walked through certain doors or not...