Digitisation has exposed kids to far more purchase opportunities and products, so teaching them the value of money is increasingly important. Online family wallet Virtual Piggy places responsibility in kids' hands, while parents maintain control.

With 2 million users, a deal with Starbucks, and $6 billion worth of transactions, Square is turning smartphones into checkouts, digitising loyalty schemes and reshaping how consumers spend – without using NFC technology.

While most people pay for goods online in their native currency, as mobile payment systems mature - boosted by Apple Pay - and new currencies flourish, soon digital wallets may have a new job: helping pick the best currency for each transaction.

As part of its Uncarrier repositioning, T-Mobile is launching into the banking business with a pre-paid debit card and banking app. But if people aren't willing to trust banks with their cash, why should they trust a telecoms provider?

With the release of Apple's iOS 8 in September 2014, Touch ID - the fingerprint sensor functionality on iPhone 5 and 6 - is coming to the forefront. As well as adding an extra layer of security, some brands are seeing the sensor as an opportunity to enhance m-commerce.

As people in India become more comfortable with making payments online, the country's leading mobile wallet service MobiKwik has launched the first money transfer service. The wallet-to-wallet feature lets its eight million users send money at the tap of a button.

With smartphone adoption rising across the developed world, the global race is on to figure out what exactly the 'mobile wallet' does – and how it can improve customer experience. McDonald's is rolling out mobile payments across the whole of France.

Referred to as 'Uber for bar tabs', Australian-based 'tab' app Clipp means people no longer have to leave their card behind the bar when they go for a drink. The app can be linked to multiple phones, so multiple drinkers can use it at the same time - with just one final bill.