Hello everyone. Welcome back to the RFID NFC
section. And this is our video number 2.2.
And in this video, we're going to talk about the NFC. So
let's get started.
So NFC is the abbreviation of near field
communication. It also uses the electromagnetic radio field
just like RFID uses but NFC
only operates on 13.56 megahertz frequency.
And in December 2003.
It is approved by an ISO standard
and later ecma standard in
2004 officially founded by Sony
Nokia Phillips. You can understand there are any
big giants who started that NFC and
same like RFID NFC
tag doesn't require line of sight so
you can use that NFC tag.
or you can embed into any other product without
thinking about line of sight.
So the question is how it works.
So there's a there are three mods reader writer
mod.
Peer-to-peer mod and the card emulation mode.
So firstly we will talk about the reader writer mod
you are watching on the left side. There
is a smartphone which is active device. And on the right side. We
have NFC tag. Okay, one smartphone start
listening or you can say that starts reading
it sends the signal and if there's
a NFC tag, it will respond back with
the data. This is the reader writer mod and
the next is appear to peer mod, which is about
communication between two smartphone devices
sharing the contact details. So
first twice we'll send the signal if other devices
active. It will also reply back to the
device. You can say that P2P communication Mark
and the third one is a card emulation mod
where an FC reader is installed and
it sends the signal as smartphone
will reply back with the content and the communication
starts. You can consider the
POS.
Smarter than POS example like different
POS machine avnfc reader
and you can just over
your card on the device and or
you can use your Android phone for
payments. This is the good example.
So we have a different types of NFC cards.
There are different data rates.
You can see there and the main thing is memory which
varies on different types
and either card is anticlusion or
collusion. So air is the
list. So type 1 is a non
anti-clusion, but the memory is small
and iterate is good.
And if we talk about the application same like
RFID NFC cards are
used by our Organization for attendance and
the area restrictions and in transportation,
like people are swapping their mobile devices on the
terminal to pay their tickets, like public
buses and Railway and for the tickets sports, like
people are swiping their
mobile devices on the counters and
getting entry into the stadium or into
the malls by the benefit of
NFC technology and the contact list
famous like payment in shopping malls. You can swipe your
mobile on the POS and same like identification by
the way in the identification there is
Passive NFC tags, which is not
using the power. So don't we get confused
on that?
So guys in the next video we're going to use
esp8266 not
esp32. I mentioned ads with 32,
but I change the plan and I'm using vmos D1 mini.
Actually. It's a small development board and good to
see a small thing.
And we will read RFID and the NFC
cards, so guys see you in the next video. Have a good day. Bye.