An article on the Daily Princetonian Web site reveals concerns that Princeton has with the use of ed tech in class, in particular, the use of lap tops and Powerpoint.
Apparently there are experiencing distracting uses of lap tops in class (IMing/YouTubing etc.) and they are looking to regulate, and not ban, lap top use. Also, Powerpoint is being questioned as a meaningful method of instruction.
I commend the Princeton community for their ability to look into these issues in a reasonable way with the goal of improving the quality of the learning experience for their students.