Let me dive into the boring stuff , NFC (Near Field Communication) is basically a short-ranged, wireless communication between two NFC enabled devices. It is used to transfer small amounts of Data.
NFC chip is present in most of the Smart Phone these days. It is present on the back of most Smart Phones, one can simply touch the back of the smart phone with the other device to use the service. It drains minimum power so you do not have to worry about getting a wall adapter before the end of the day.
Working
Just like Bluetooth and WiFi, NFC works on the principle of sending information over Radio Waves. If you have seen a RFID (Radio Frequency Identification) Tags in action (Which you must have if you study at NUST SEECS), This is the same thing but the only difference between an RFID and NFC is that NFC is two-way connection Whereas, RFIDs are one-way connection. NFC uses the idea of Electromagnetic Induction (same as RFIDs) to transmit information. This means that the device receiving the information does not need to be powered at all. The receiving device or Passive Device is powered by the Electromagnetic Field of the Sending Device.
The Transmission Frequency for Data across NFC is 13.56 Mega Hertz & the data can be sent at either 106, 212 or 424 Kilo-bits per Second and a connection can be established by bringing the devices within 5 cm (2 inches).
Applications
- Transactions: You can go to a store and pay using your Mobile Phone. Just keep an eye out for this symbol whenever you go out for shopping. The best part is that you do not have to keep track of the receipts. The receipts will automatically be saved onto your Mobile Phone. Some of the services are named as Android Pay, Apple Pay or Google Wallet etc.
- Data Transfer: What good is a Technology if you cannot transfer Data over it. using NFC you can transfer Data very quickly. You can share screens with your friends using NFC.
- Business Cards: With NFC you can have business cards which are actually smart. These Cards can take the swiper directly to your Online Resume or your Website.
- NFC Tags:
Why do you call Smart Phones Smart if they cannot even turn your WiFi OFF & your Mobile Data ON when you step out of your house, well you can do that now using these tiny tags.These Tags can be customized by the user and they can do whatever you want when you touch them with your phone Now you do not have to remember to set up an alarm when you go to bed these tags will do that for you.
- Parking Meters: Who likes to carry coins with you all the time, now you can pay the parking meter with a simple touch.
- NFC Enabled Car Keys: As the name suggests, this is a type of car keys where you can unlock your car with just a tap.
- App Launching: Using NFC you can launch a particular app when you touch an NFC Tag. You can launch (Lets say) Google Maps whenever you put your phone in a Car Dock.
Future Scope
We will see a lot of NFC usage in future. Some of the usages might be:- Paying for a movie from your home without entering any of your bank account details.
- Student/Employees Identity Cards
- NFC tags in Hospitals. to get the information about the patient when you touch the NFC Tag
- Accessing Public WiFi s using NFC
- NFC Tags on Buy-able Stuff.
- NFC on Movies Posters
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