Until 2009 , Kibera -- one of the world 's largest slums and home to more than 250,000 people -- appeared only as a blank on online maps . Mobile phones are helping African citizens hold their governments to account . Comment: ` There 's a real thirst for this information in Africa '' Technology can help ensure governments serve the interests of their citizens , she says .
Mobile phones are helping African citizens hold their governments to account . Comment: ` There 's a real thirst for this information in Africa '' Technology can help ensure governments serve the interests of their citizens , she says .