NFC allows short-range wireless communication between devices like phones and tags. It has two modes: passive, where one device provides power and the other receives it, and active, where both devices power their radios. NFC is used for applications like mobile payments and connecting devices for data transfer. It has a very short range under 50cm, low transfer rates, but high security and low cost. While useful for contactless transactions, its disadvantages are limited range and data speeds.

1. MOHD KHALED KHAN

2. What is NFC?
•NFC is a short-range wireless technology.
• NFC is based on Radio Frequency Identification (RFID)
technology.
•Communication is also possible between an NFC device
and an unpowered NFC chip, called a "tag“.

3. OPERTAION MODES OF NFC
MODES OF
OPERATION
PASSIVE ACTIVE
MODE MODE

4. Active mode
 In Active mode, both devices with NFC chip generates an
electromagnetic field and exchange data.
Two NFC
enabled
devices
transfer-
ring data
in active
mode

5. Passive mode
 In Passive mode, there is only one active device and the
other uses the tag to exchange information.
A NFC-
enabled
mobile
phone is
paired
with a
RFID-
tagged
"smart
poster"

6. Applications
 Touch and Confirm
Applications such as mobile payment where the user has
to confirm the interaction by entering a password or just
accepting the transaction.

7. The screenshot from a mobile device showing the confirmation message.

8.  Touch and Connect
Linking two NFC-enabled devices to enable peer to peer
transfer of data such as downloading music, exchanging
images or synchronizing address books.
Data transfer
via NFC

9. COMPARISON WITH BLUETOOTH
Bluetooth NFC
Range 0 ~ 10 m < 50 cm
Transfer rate Medium Low
1 Mbps 424 kbps
Security High Very High
Cost Medium Very Low

10. ADVANTAGES
•No special software.
•No manual configuration and settings.
Disadvantages
•Short range communication.
•The data transfer rate is very less.

11. Conclusion
Mobile handsets are the primary target for
NFC and soon NFC will be implemented
in most handheld devices.

12. THANK YOU!