NFC devices, or Near Field Communication devices, are technology tools that allow for short-range wireless communication between compatible devices. They typically operate within a range of about 4 inches (10 cm) and are commonly used for tasks like making payments, sharing files, or connecting to other devices quickly and easily. These devices can be found in smartphones, smartwatches, and payment terminals. When two NFC devices come close together, they can exchange information without needing to pair or connect through traditional methods. This makes NFC a convenient option for users looking for quick interactions, such as using mobile wallets for transactions.