Until now, one field has been safe from robotic interface: collecting money on the street. Not for long. A space already overcrowded with guitar playing hippies, dogs in bandanas, and children carrying bright orange UNICEF boxes has a new force to reckon with. It's Don-8r (pronounced "donator," for those who don't speak robot), programmed expressly to collect change and be adorable. University of Dundee student Tim Pryde created the coin-fueled robot to help raise money for charity. It's taken a few spins around the school's campus and has already mastered the three Ps of money collection: politeness, persistence, and performance -- the latter accomplished via color changi
