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I read some articles about the NFC-technology (NFC = Near Field Communication) and I think it's a possible scenario that in a few decade there is no more cash and everyone will pay with their mobile phones.
How does it work: To pay for example in a supermarket or in the train you need a smart phone equipped with the NFC-technology. You pay by holding your mobile phone in front of a NFC-capable paying terminal. You have to enter a PIN and the money is charged from your bank-account. In the future, NFC-capable phones might replace credit cards. In Kenia it's already possible to pay your power and water bills via a mobile phone.
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