Tech Tent: China's AI ambitions

On this week's Tech Tent we hear why China's determination to be a leading player in artificial intelligence could lead to tensions with the United States. We have two other reports on this week's programme. Her victory is being seen as a key moment in the battle against the internet scourge known as revenge porn. And in a report from Rahul Tandon in Kolkata, we find out why India's new Aadhaar biometric identity card scheme has become mired in controversy. For millions of people who have struggled to open a bank account or get access to government services without proof of identity, it has proved life-changing.