In India, some people are strapping cameras to their bodies to collect data on how humans move and train A.I.

In the fast-growing field of data annotation, workers in a small city in south India train A.I. to improve how it performs tasks traditionally done by people.

© Anindito Mukherjee for The New York Times

China is exporting more than A.I. models. It wants its data to influence the world’s chatbots, raising fears that Beijing’s narratives will spread with the technology.

© Go Nakamura/Reuters

An unsecured police dashboard was a rare window into how the authorities track foreigners by collecting and aggregating vast amounts of private data.

© The New York Times