1. QR code :
QR code is a way of storing data in the form of two dimensional representation. It is also a form of barcode. Developed in 1994, the QR code is scanned by a QR scanner to get the information it represents. It stores data horizontally as well as vertically.
QR Code that scans to www.geeksforgeeks.org
2. Near Field Communication (NFC) :
NFC is a relatively newer technology developed in 2002. It was developed for communication between two devices using inductive coupling. It offers low speed connection of devices within 4 cm. It is very simple to setup the NFC technology. It is widely used in cashless payouts.
NFC on a speaker
Difference between QR Code and NFC :
| S.No. | QR code | NFC |
|---|---|---|
| 1. | It was developed in 1994. | It was developed in 2002. |
| 2. | It was developed by Masahiro Hara. | It was developed by Franz Amtmann and Philippe Mangars. |
| 3. | It is only of 1 type. | It is only of 1 type. |
| 4. | It is a type of 2D barcode or printed representation of data that can be scanned for data retrieval. | It is a communication protocol for communication between devices (electronic) within a distance of 4cm. |
| 5. | It is used in supermarkets, hospitals, cinema or by individuals etc. for transfer of data (sharing contacts, photos, videos and other documents). | It is used as identity cards, as key cards and as a method of contactless payments and mobile payments in various sectors such as retail, automobile, cinema etc. |
| 6. | It is based on Morse Code technology. | It is based on inductive coupling between antennas of the devices. |
| 7. | It requires line of sight. | It requires proximity (distance between the devices must be less than 4 centimetres, hence the name, Near field). |
| 8. | Only one QR code is examined at once. | Only one NFC is examined at once. |
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