Scanning Hands As New Campus ID

Hand scanners, electronic fingerprint readers, even retina scanners are increasingly in use at colleges to identify people seeking access to campus buildings. Proponents of biometric technology say it offers security and efficiency, and can also help colleges control access to computers and networks. But it is costly, and skeptics worry that it may invade the privacy of students and employees. Are such concerns overblown? Do the advantages of biometric technology outweigh its risks? The Chronicle hosted a live online discussion today.