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Five Applications of NFC in a Smart Phone

Nowadays, most smart phones have a very practical but easily overlooked "hidden function" - NFC. Different from the frequency used in bluetooth and WiFi, the most commonly used frequency of NFC is 27.120mhz, and the commonly used package sizes are SMD3225, SMD2520 and SMD2016.

 

This kind of electronic products are RF products. The stability and accuracy of crystal oscillator frequency directly affect the performance of NFC function. Therefore, in the selection of crystal oscillator, in addition to whether the electrical parameters of crystal oscillator meet the requirements, we should also be cautious about the quality of crystal resonators and oscillators.

 

NFC (Near Field Communication) refers to short-range wireless communication. There are mainly five applications in the smart phone.

 

Firstly, Touch and go, such as access control management, admission and bus tickets. It can be used to store tickets or passwords to close to the card reader or for logistics management.

 

Secondly, Touch and pay, such as non-contact mobile payment. User can make payment and confirm the transaction by placing the device close to the POS machine embedded with NFC module.

 

Thirdly, Touch and connect, like connecting two NFC devices for peer-to-peer data transmission, such as downloading music, transferring pictures and exchanging contacts.

 

Fourthly, Touch and explore enables users to connect NFC mobile phones to smart public phones or posters with NFC function on the street to browse traffic information.

 

Finally, Load and touch. Users can receive or download information through GPRS network for payment or access control functions. 

 

As mentioned above, the user can send a specific format of SMS to the mobile phone of the housekeeper to control the housekeeper's access to the house.



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