What is the main purpose of NFC technology?

The main purpose of NFC (Near Field Communication) technology is to facilitate communication between close-range devices. NFC operates over very short distances, typically about 4 inches or less, which allows for secure and quick data exchange between compatible devices. This technology is commonly used in applications such as mobile payments, where a smartphone can communicate with a point-of-sale terminal simply by being held close to it. The short range enhances security, as the devices must be in close proximity to interact, reducing the risk of interception compared to technologies with greater ranges.

Other options do not accurately describe the primary function of NFC. High-speed data transfer over long distances is more characteristic of technologies like Wi-Fi or Bluetooth. Providing wireless internet access is also not a function of NFC; rather, it relies on other wireless protocols to achieve internet connectivity. While storing user credentials securely could be a feature supported by NFC-enabled applications (such as mobile wallets), it is not NFC's primary purpose. Therefore, the correct answer highlights the critical role of NFC in enabling seamless communication between devices situated in close physical proximity.