The 'India stack', the digitising of identities and bank accounts, will help people out of poverty, say these two tech billionaires. FT reporter David Keohane caught up with them both in Mumbai.
Bill Gates and Nandan Nilekani on India's digital transformation
Financial Times World Tech Founders is a new series on entrepreneurs in emerging markets. Founders talk about the rewards and challenges of starting up a business in countries such as Egypt, Tanzania and China.
