“Your money isn’t welcome here.” It’s a very rare occasion that diners at a restaurant will ever hear these words, but they may soon be common at US-based fast casual chain Sweetgreen, which is getting rid of cash payments in most of its 64 stores. Are Americans ready to ditch physical currency?

Whether it’s splitting the bill at a bar or sharing a cab fare home, paying your peers can be an awkward hassle. Mobile wallet app Venmo is changing this with a social media-style digital payment system that lets you instantly transfer money between friends. Could Venmo kill cash for good?

Smartphones are no longer just a means of communicating. They wake us up, get us from A to B and even help us find love. We’ve almost forgotten their original purpose. Text trumps voicecalls and apps trump SMS – it’s a good time to ask – what’s the future of the mobile phone?

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?