Why is identity important in financial services? - Decoding: Banks - Episode 5

From 11:FS. There are one billion people globally who can't prove their identity. That's a big problem for accessing financial services. Banks need to know your identity for a number of reasons. It helps them to combat money laundering, which they spend £28.7bn on every year. So you know they're not messing around. But why else? What is KYC? And does financial services have an identity problem?