Face card declined: The ethics of biometric payment systems

It's not too long ago that buying something meant handing over cash, or at least a physical card. But one company is looking to take digital payment a step further, introducing an option that allows you to make a purchase not with your device — but your face.Paying "with a smile" is a fair way off being commonplace in Australia, and it would be an opt-in service. However, facial recognition becoming more commonplace across in our daily lives. So what's around the corner?