The world has been talking about mobile payments for years, but the phrase means different things to different people. So what exactly are mobile payments? And how much more mobile than cash or cards payments can actually get? Some people believe that mobile payments are those made using mobile phones. Others, myself included, understand the phrase to mean the most mobile, cash-independent payment method possible. The second most mobile payment type is the credit card: electricity doesnt always work, and as Barclaycard demonstrated so effectively in its ad, you can even use your card on a waterslide.”]
Source: https://informationsecuritybuzz.com/articles/smartphones-credit-cards-mobile-payment-method/