Digital payment service Square is the brainchild of Twitter's co-founder and co-creator Jack Dorsey. In just 12 months it's transferred hundreds of millions of dollars. Now, with the release of Cash, Square wants to make it even easier to send and receive money.

In the US, 80% of consumer spending no longer involves physical dollars, while in Britain cash use has dropped 14% in the last five years. What is driving this shift towards a cashless society? And how will we spend and manage money in the future?

While Apple Pay waits for its moment in the spotlight, Facebook may be planning a side swipe to take Apple of their feet. A recent exploitation of Facebook's Messenger app has revealed that it is poised to offer the ability to send payments via the app.

Only 0.6% of online shopping is driven by social media, compared to e-mail, which drives 27%. Can Facebook’s Buy button, integrated into newsfeeds, encourage people to spend more when they're on social media? And are retailers really welcome on such a personal platform?