What is the primary purpose of NFC technology?

The primary purpose of NFC (Near Field Communication) technology is indeed contactless payment and data sharing. NFC operates over very short distances, typically less than 10 centimeters, which facilitates secure and rapid transactions by simply bringing a compatible device close to an NFC reader. This technology has become widely adopted in mobile payment systems, allowing users to make purchases by tapping their smartphones at payment terminals.

In addition to payments, NFC is also utilized for sharing data between devices, such as transferring files, connecting to Wi-Fi networks, or pairing Bluetooth accessories with minimal setup. Its convenience and security, due to the proximity required for communication, have made NFC an essential feature in modern mobile devices.

The other options do not align with NFC's functionality. Long-range communication is more accurately achieved with other wireless technologies, such as Bluetooth or Wi-Fi. Streaming high-definition video typically requires more bandwidth than what NFC can provide, and while wireless charging is a relevant technology, it operates on different principles (inductive charging) and is not a function of NFC itself.