SmartDesks?

A respondent from my current poll on ask500people writes:

If each desk had a keyboard and screen, you could just plug in your phone/computer and start working. That would be very convenient.

What a great idea. Why spend the money on $700 - $1500 on laptops for each student when we could just buy a $100 monitor and a keyboard / mouse for each desk. The student then just plugs in his or her phone and goes online.