A look at US schools' growing use of mobile phone tracking tech from companies like Inpixon, using scanners to pick up Bluetooth, Wi-Fi, and cell signals (Alfred Ng/CNET)

Alfred Ng / CNET:
A look at US schools' growing use of mobile phone tracking tech from companies like Inpixon, using scanners to pick up Bluetooth, Wi-Fi, and cell signals  —  Teachers often lament that phones can be a distraction in classrooms.  Some governments have even banned phones outright in schools.

via Techmeme