Contactless NFC payments

Paying for any purchases without using cash is easier today than ever. You don't even have to take your credit card out of your wallet to do this. The NFC system allows you to make a contactless payment by simply bringing a card, smartphone, watch or other device to a certain distance from it. Contactless payments this unique technique is rapidly gaining popularity all over the world, as it takes the purchase of goods to a completely new level of convenience. How to pay with a phone instead of a card? At the same time, there are still issues related to the safety of its use. In this article we will talk about contactless payment technology by bank cards, explain what it is and how to use it correctly. Near Field Communication (NFC) is a short-range wireless data transmission technology that enables data exchange between devices
Now almost everyone has NFC-enabled cards with which you can pay for a purchase in one touch, and even better to do it with a smartphone or even a smartwatch, there are cards with which you can pay for travel, as well as top up your balance from your phone (it's a pity that such a system was not introduced in all cities, and in some preferred to "invent bike" and used cards that are incompatible with NFC). And you can also just touch the headphones with your phone, and they themselves form a pair with your phone and in some cases even turn on Bluetooth.
1- What is NFC contactless payments;
2- which phones support contactless payment;
3- advantages of contactless payments;
4- where else is NFC technology used;
5- how to use Android Pay;