How much cash is in your pocket? With the onward march of technology, physical money now seems somewhat redundant. Paying for things with a smartphone or contactless card is simply more convenient nowadays. So with digital transactions becoming the norm, is the ATM doomed?

Two out of five internet users have bought a product online. But a lengthy payment process means we often abandon purchases at the checkout. What if you could buy using just an email address and postcode? By separating ‘buying’ from ‘paying’, Klarna promises stress-free online shopping.

Apple is hoping that Apple Pay, a tap-to-pay service integrated into the iPhone 6 and Apple Watch, will help it dominate the $79.2 billion-a-year digital payments market. But can Apple succeed where so many have failed before, and truly replace our wallets with our phones?

Whether pinging your colleague a PDF or sending a mate an mp3, email attachments are the norm. And Google Wallet now allows UK users to attach cash to their emails, too. But in a financial landscape rife with privacy concerns, do people really want bank transfers to be as easy as sending an email?