Filed under: Cellphones, GPSNearly six months after Slippery Rock University introduced a RFID payment system for mobiles at its campus, we've learned that Montclair State University is requiring that all full-time undergraduates carry a school-issued mobile for their own safety. The handsets, which cost some $210 per semester, are already being carried by about 6,000 students, and feature a GPS function that can be activated to ensure campus police are alerted of their location if something goes awry. Aside from