Hello, everyone. I hope you are fine and welcome to the new
section in the section. We're going to talk about RFID and
the NFC where we will also work practically
on RFID and NFC Reader.
So guys, let's get started with that.
So this is our video number 2.1 where we're going to discuss about
the rfit.
So firstly we will talk about the what
is RFID and what's the history of RFID? Okay,
actually RFID uses electromagnetic
fields to identify the tags and firstly develop
in World War Two to identify the airplanes and
the Mario's.
Patented is first device on 23rd, January
1973 and scientists except
that he is the first true and sister of modern RFID,
but the Charles Watson is a person
who patented RFID in 1983
and RFID doesn't
require any line of sight so you can embed
that tag into any product and it works
fine.
So we need to see how it works.
Okay, the system consists of three parts if we
talk about first part is RFID tag and other is a RFID
antenna. You can say that RFID reader or
writer actually in the modern day. We have
devices which contains reader or
a writer and antenna in combination and
one pack twice and the third part
is the application. You can connect your RFID.
Redirected advice with your computer and when at any
tag comes in the range of antenna, it will detect and
send the data to the application. But if
we talk about modern iot our devices
are iot enable like Laura enabled or
GSM enabled or Wi-Fi enabled it
will directly send the data to the server.
So now we need to talk about tags. We
have a three different types of tag one is a passive tag,
which doesn't need any power. It
works without the power and the other is active tag,
which requires a battery to send and receive
the data and there's a third tag, which is semi passive
tag. It contains a power battery.
But without trust meter.
So now let's come to the specification of tags.
We have a four different types of tag with
different frequencies. So first one is 120 to
150 kilohertz, which is unregulated and its
ranges of four range and it's a passive tag and in a
older days people use that attack, but now 13.56
megahertz tag is a famous
among every industry. It's
comes under the ism bandage range varies from
0.1 to 1 meter. It's also a passive tag. It's
simple example is like your ATM card your national identity
card or
your passport actually some countries now starting embedding
the RFID chips into
the passports.
And the second last is comes under
the 433 megahertz or 860 to
960 megahertz. Actually there comes under the
short range devices. They have all 15 to 20 feet. And there
comes under the active tax category, which
means they have a power backup or power battery.
And the last one comes under the 2.45
to 5.8 kegahertz. It
also comes under the ism band. Sorry.
I write the bank it's band and
their range is approximately 350 feet
and preferably used in sports and
It's also active mean it contains the battery.
Now let's talk about the applications the
very good and daily life
example is access management like an organization
people are using their cards for attendance and
they also have a area specific restrictions. So
it's a good use case and next
one is a tracking with the advancement of
active tags. It's a good use case
to put the tag behind your products persons.
I mean Childs and if you
have a dog, you can also put the active tag and in
many countries like in Australia in Parks
people are using active tags for
their children to track where they are and especially in
the malls and the third one is a sports Now
Sports Industries grooming and
at least are using the active tags
to track their activity and
The main teams are
using that tags to track where our
sports persons are located and
specially if we talk about the marathon these
tags are very helpful to identify which
person come first and the
fourth one is a contactless payments that
we already using like we are swapping the cards if
we are shopping something in a mall
and on the POS we have opportunity to just
swipe our cards.
the cars also have a
RFID tags to pay the total
Plaza and the last one is a
smart cars which is national identity card or passport.
So these are some famous use cases are these
are not limited to those use cases where there are
many use cases, but I only choose that use cases
which are already in the market. So you guys can
understand easily.
So guys, this is the RFID and the next section. We are
going to talk about the NFC see you in the next video. Have a
good day. Bye.