Subscribe to Xiaomi WorldReceive an email a day with our articles:The NFC is a connectivity that integrates today the vast majority of smartphones, and even also the vast majority of credit/debit cards to be able to make payments without having to touch the POS.Today we are going to see what is hidden behind this connectivity that is much more present in our day to day than we might think.Despite being very popular, not all Xiaomi devices integrate it, the truth is that it is used very often to be able to make payments through the mobile.It is a connectivity that means by its acronym Near Field Communication (near field communication in Spanish).The radius of action of this connectivity is very limited, the devices have to be very close together, and even touch in some situations, in order to workThere are two types of NFC tags.On the one hand, we find those that have a fixed identity, such as, for example, credit or debit cards.On the other hand, we find mobile phones whose NFC card can be changed.In other words, by using the same card we can use others, such as public transport.The one on our mobile is of this second type, which makes it much more versatile.Identification: allows access to places where identification is required.Public transport passes or passing the turnstiles of an office building, for example.Instant synchronization of devices: Just by bringing your mobile closer to some speakers, these would be automatically synchronized in a simpler way than having to pair them via Bluetooth.Automation of actions: NFC tags are stickers that we can configure so that when we pass the mobile over them they make automatic configurations.In such a way that when leaving the mobile on the bedside table, the do not disturb mode is activated.Payment with the mobile phone: without a doubt, it is the star of the uses of NFC.Mobile phones, unlike other devices such as NFC cards or credit cards themselves, have a fixed chip.The mobiles that can make the NFC card that they house inside can be read as a totally different card.And even the possibility of reading others such as the transport pass to find out how many trips we have left.Beyond mobile payments, it can also be used to program actions using NFC cards, so that when our device detects the card, the mobile makes a series of internal adjustments, so that, for example, when we put it on the nightstand the do not disturb mode is activated or the parameters that we have configured.It can also be used to perform file transfers.It is a fairly slow transfer method, but it can be very useful in situations where we do not have internet to be able to transfer small files between devices.In Xiaomi World Your new Xiaomi Smart Band 7 can answer WhatsApp or Telegram messages: so you can configure it easilyUsing it is as simple as choosing "Android Beam" when sharing a file.Remember that both devices must have NFC activated and be very close to each other in order to transfer the file in question.Despite the fact that many do not know it, when we add our bank card to Google Pay or similar services, the app itself takes care of hiding our card and creating a virtual one.In such a way that if you look at the purchase tickets, many times the termination of your card will not appear, as long as you have paid with the mobile, but in reality a card that does not exist, but that is linked to your card.It does not happen in all cases, but it is quite common.In Xataka Android How to configure mobile payments on a Xiaomi with MIUIIf the NFC of your mobile does not work when making mobile payments, it is most likely that the app that you have as default in settings is not the appropriate one.Changing it is as simple as following the steps in the previous section, accessing the "Contactless payments" section and choosing the app in which you already have your debit card added, because if not, when you have your mobile phone unlocked and in the main menu it will use the default one in the settings, but not the one you have added your card to.Share NFC: what it is, how to know if my Xiaomi mobile has it and what it can be used forMore Sites You'll LikeSee more articlesIn Xiaomi World we talk about...