NFC smartphone for access control

[albantocilla]

Hi everyone,

I am new to Arduino.

So, I am making a project to make my own smart door lock.

I wanted to know if it was possible to use the NFC chip of a smartphone as a tag to be read on a NFC reader, e.g. to use it with the PN532 module? I searched for it on the internet but i didn't find a proper answer to this? Can someone clarify that for me?

Thanks in advance!

[paulpaulson]

@albantocilla

NFC chip of a smartphone

@albantocilla

PN532 module

Did you read and study the datasheets ?

[noiasca]

@albantocilla

I wanted to know if it was possible to use the NFC chip of a smartphone as a tag to be read on a NFC reader, e.g. to use it with the PN532 module? I searched for it on the internet but i didn't find a proper answer to this? Can someone clarify that for me?

It is possible but it needs more effort than just reading the phone.
The UID of a smartphone will change with each read. So you can't use the smartphones UID as identifier.
You will need a separate app which provides an unique identifier for your PN532.
If you have already a debit/credit card on your phone you could use the PAN of the card ("primary account number") as identifier in your Arduino program.

Here I describe the basics how to read a bank card:
https://werner.rothschopf.net/201703_arduino_esp8266_nfc.htm

[barshatriplee]

You can follow this thread too: My NFC project , using PN532 and android phone