It's been done (though instead of money, candy and instead of the urban poor, UC Berkeley CS students): http://hci.berkeley.edu/cs260-fall10/images/b/ba/FinalP

It's been done (though instead of money, candy and instead of the urban poor, UC Berkeley CS students): http://hci.berkeley.edu/cs260-fall10/images/b/ba/FinalPaper-HeimerlTrinh.pdf http://hci.berkeley.edu/cs260-fall10/images/b/ba/FinalPaper-...