How NFC works
NFC can work in two modes. For the former, both devices need to have their own energy source, while the second one is sufficient. In the second case, one device receives its operational capacity from the electromagnetic field of the other.
The NFC chip itself has a relatively compact size, allowing you to install it on smartphones, speakers, tablets, and other mobile devices.
Exchange data with other devices
Compared to Bluetooth, NFC has a very high connection speed between devices. At the same time, the data transfer speed itself in active connection mode is somewhat low. In NFC smartphones it is usually used only to transfer contacts, links, notes, and coordinates on the map.
The NFC chip itself has a relatively compact size, allowing you to install it on smartphones, speakers, tablets, and other mobile devices.
Exchange data with other devices
Compared to Bluetooth, NFC has a very high connection speed between devices. At the same time, the data transfer speed itself in active connection mode is somewhat low. In NFC smartphones it is usually used only to transfer contacts, links, notes, and coordinates on the map.
When transferring large files, the technology is only used for connected devices, and the content is sent over Bluetooth or Wi-Fi. This applies even to simple video or document transfers via the "send" function.
Knowing the exact location of the antenna slice can be in the instruction of the device. However, in most cases they are displayed on the back of the phone.
Programmable tags
The passive connection mode can be used to read information from programmed NFC chips or so-called marks. They do not have their own power source, and activation occurs from the electromagnetic field of the reader's device.
The main purpose of the tags is to obtain additional information about a product or event. In some retail chains, NFC tags are replaced by the barcode, the buyer can obtain detailed information about the structure, expiry date and storage conditions.
Labels are also used to automatically perform various actions on a smartphone - including applications, changing the voice profile, sending messages, etc. Labels are programmed through special applications on your smartphone, such as NFC Tools.
NFC in the field of payment
NFC can be used to simulate bank cards. To pay for goods anywhere. The most important thing is to link your prepaid card to the payment system available for your smartphone.
Android Pay has the highest coverage by device, since unlike Apple and Samsung, it's not designed for devices from a particular manufacturer. However, none of these payment systems can be used without fear and risk.
None of them at the time of payment send the card number to the same machine. Instead, it uses a digital encrypted ID that is automatically created when the card is activated.
How safe is NFC
NFCs can receive and send data at the same time, allowing them to detect discrepancies if the receiving signal does not match the transmitted signal.
The risk of intercepting your data is very small, especially given the scope covered by this technology. It is not like Bluetooth, which works within a range of tens of meters, so it is more at risk of intercepting data.
This also applies to payment using this technique: Hackers or hackers can not access a payment-generated ID without reaching your card. The fact that the encrypted identifier intercepts appears to be unrealistic.
In addition, payment without contact requires confirmation via fingerprint, password or face scanning. Without this, your payment will not be processed. So, even if your smartphone is stolen, no one can use it as a payment tool.
How do I make sure this technology exists in my phone
None of them at the time of payment send the card number to the same machine. Instead, it uses a digital encrypted ID that is automatically created when the card is activated.
How safe is NFC
NFCs can receive and send data at the same time, allowing them to detect discrepancies if the receiving signal does not match the transmitted signal.
The risk of intercepting your data is very small, especially given the scope covered by this technology. It is not like Bluetooth, which works within a range of tens of meters, so it is more at risk of intercepting data.
This also applies to payment using this technique: Hackers or hackers can not access a payment-generated ID without reaching your card. The fact that the encrypted identifier intercepts appears to be unrealistic.
In addition, payment without contact requires confirmation via fingerprint, password or face scanning. Without this, your payment will not be processed. So, even if your smartphone is stolen, no one can use it as a payment tool.
How do I make sure this technology exists in my phone
If you do not know if there is NFC on your smartphone, you can check it by looking in Settings. Typically, features related to this technology are available in the connection or wireless networks.
