On hands and knees, he painstakingly sweeps every inch of the street with an old shoe brush. But he and his young son Asad aren't collecting trash. They're looking for gold dust that blows out of the jewellery shops around them.
In Pakistan, there's no good system for tracking vehicle registrations. So, instead of issuing tickets to illegally parked cars, the vehicles are essentially trapped close to the spot they've illegally parked in, until their owner pays the fine.