Prelims 2015 · Science and Technology · Question 32
With reference to 'Near Field Communication (NFC) Technology', which of the following statements is/are correct?
- It is a contactless communication technology that uses electromagnetic radio fields.
- NFC is designed for use by devices which can be at a distance of even a metre from each other.
- NFC can use encryption when sending sensitive information.
Select the correct answer using the codes given below.
Answer
1 and 3 only
1. Correct. NFC is a contactless short-range wireless technology based on electromagnetic radio fields (radio-frequency induction).
2. Incorrect. NFC works only over a very short range, typically about 4 cm or less, not up to a metre.
3. Correct. NFC itself can support secure communication, and in practical uses like payments, encryption/secure elements are used for sensitive data.
Hence, statements 1 and 3 only are correct.