The video discusses a project led by John and his team to map the uncharted slum of Makoko in Lagos, Nigeria. Using smartphones, they aim to document points of interest and improve navigation for the 300,000 residents. The project, supported by Code for Africa, seeks to provide Makoko's inhabitants with the same access to neighborhood information as other Lagos residents, while also helping to secure their place in the city. The mapping initiative is expected to transform public perception and provide a digital presence for the community.

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