With reference to lsquo Near Field Communication NFC Technology rsquo which of the following s...........

Science Affairs Electronics and Computers

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With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correct?

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 code given below:

1 and 2 only

3 only

1 and 3 only

1, 2 and 3

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Explanation:

Second statement is incorrect i.e. NFC is designed for use by devices which can be at a distance of even a meter from each other
Near Field Communication (NFC) is a short-range wireless connectivity standard that uses magnetic field induction to enable communication between devices when they're touched together, or brought within a few centimeters of each other.
Near Field Communication utilizes electromagnetic radio fields while technologies such as Bluetooth and Wi-Fi focus on radio transmissions instead.
The tech involved is deceptively simple: evolved from radio frequency identification (RFID) tech, an NFC chip operates as one part of a wireless link. Once it's activated by another chip, small amounts of data between the two devices can be transferred when held a few centimeters from each other.
No pairing code is necessary to link up and because it uses chips that run on very low amounts of power (or passively, using even less), it's much more power-efficient than other wireless communication types.