How to 'lose' Bitcoin worth $276m

Technology correspondent Paul Matthews looks at how the unregulated nature of cryptocurrency hit home recently with the case of a young company founder who died - taking knowledge of the password for a "wallet" of $276m with him. And as there's no password reset options and no way to break into them, investors are out of pocket. And with global e-commerce booming, the WTO has decided it's time to review the rules for selling online.