T here is little expensive technology flaunted on the streets of Kibera, a slum in Nairobi, Kenya, often called the largest informal settlement in Africa.

So it is a disorientating sight to see children gathering in the corner of a ramshackle bus terminal on the slum’s outskirts, clutching a disparate collection of flashy cameras, ranging from DSLRs to GoPros, as well as the occasional e-tablet.