7 . It’s not so long ago that contactless card payments were exciting and new, but the technology is already old-hat. The new, better way to pay for things in shops? By using your phone to make a contactless payment.

Because traditionally, when you have paid with a card tap (轻敲) or using a chip and pin machine, ultimately the shop you are buying from will be noting down all of your card details.     1     And this could be a problem — it means that if the shop is hacked (侵入) or plays fast and loose with its data, you could find your card number exposed to the world.

However, when you tap to pay with your device, it generates a unique ID number for that deal and sends that instead. So you can pay for your goods and the shop can get your money.     2     That is to say, phone payments are smarter.

    3     If a pickpocket steals your card they can immediately use up the money. But if they get your phone, when the phone goes to pay it will typically perform a biometric check-it will ask for a finger-print or use the camera to look at your face, to check that you are who you say you are.

    4     Because of this added security, the limit (限额) is typically higher than for contactless cards. In the UK, it’s around £ 100 for most retailers-though some shops including most supermarkets let you spend much more with just a tap of the phone.

Want to give it a try? To actually set things up, go to your Wallet app and follow the instructions.     5     Then it will automatically recognise the numbers and connect with your bank. Usually you receive a text message with a special code on it. And then, well, you’re done. When you pay, hold your phone over the payment machine, and pay for your goods!