1. It is a contactless communication technology that uses electromagnetic radio fields.
2. NFC is designed for use by devices which can be at a distance of even a metre from each other.
3. NFC can use encryption when sending sensitive information.
Select the correct answer using the codes given below.
Explanation
Near Field Communication (NFC) is a short-range wireless technology that allows devices to communicate by tapping or bringing them close together. NFC is used in various applications, including contactless payments, data exchange, and access control.
Statement 1 is correct: NFC is a short-range wireless communication technology that enables devices to exchange data over distances typically up to 4 centimeters. It operates by generating electromagnetic fields through inductive coupling at a frequency of 13.56 MHz, which facilitates the transfer of information between devices. This contactless technology is widely used in mobile payments, access control, and data exchange.
Statement 2 is incorrect: NFC technology is designed for an operation distance of a few centimeters(not meter). This makes it more difficult for attackers to record the communication between an NFC Forum Device and an NFC Forum Tag compared to other wireless technologies which have a working distance of several meters.
Statement 3 is correct: NFC technology incorporates encryption methods to secure data transmission, ensuring that sensitive information remains protected during exchange. Techniques such as AES (Advanced Encryption Standard) are commonly employed to maintain confidentiality and integrity.