It's a little surprising that this article approaches the issue from the perspective of the gizmo working, rather than ever-widening surveillance.

Imagine that some automated surveillance technology proved itself to be 100% effective at spotting aggressive behavior. The only catch is that it records, with perfect fidelity every sneeze, cough, conversation, and laugh in a way that uniquely associates each instance to an individual. Part of the efficacy requires all audio and personal identification to be stored in a giant database.

Should such a technology be deployed in US public schools?