The Campus in the Palm of Your Hand

Cellphones now transmit colleges' course updates, quizzes, bus schedules, and safety alerts

Bagie M. George thought she would never be one of "those people." The assistant professor of biology at Georgia Gwinnett College, on the outskirts of Atlanta, explained: "You know, 'those people' who are always on their cellphones wherever they go. I had one, but I never used to carry it."

Then her college gave her a phone — fully paid for — and told her it was part of her job to use it. "I review homework assignments, text message to students in the evening, and