Communication within 10cm!

Who will not laugh at me if I say "There is a system which communicate in the range less than 10cm..!" Do we need a system or device to communicate within 10cm? what a stupid idea...!?

Sorry, I am confident and don't mistaken me. I am talking about the communication within 10cm only. Oh...that is new wireless communication called NFC. 

Before talking about NFC, I will give an example. You go to a  city and looking for roadside candy for Rs.7. You have 500/-  and no change. You have to roam here and there to have change for 500/- or candywala needs to give change for you. I have experienced that both the ways are difficult.

You believe me, you have one more choice now.  "Just hold your mobile very near to candywala's mobile..and take candy in your hand..that's all".

Yes, that is possible in few years. The new wireless communication system called Near field communication(NFC) is developed for mobile and alike devices for secure transactions, business card exchange and may be for identity as well.

The NFC is not made for file sharing and huge data transfer protocol like wifi or bluetooth. Since the range is less than 10cm, inherently secure than other wireless technology. 

NFC is a extension of RFID. An RFID system operate in wide range of frequencies. However, an NFC system is standardized to 13.56MHz.Since many frequency bands are already allocated to different functions in different countries by FCC, only 13.56MHz is freely available band.It is also noted that this band of frequency is also good enough to meet VLSI design standards(lower the frequencies bulkier is the systems and higher the frequencies power will be high).

Recently released android mobile Nexus -S has NFC. The NFC usage is not yet grown enough to build trust in the society.Tech news sites have reported that 6 out 10 multimedia sets will have NFC by 2015. 

I will happily welcome you NFC..!