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As I am using arduino along with several sensors like ultrasonic sensor and esp8266 - 01 (wifi module). Using SPI.h (header) is making some trouble. I confirmed that this is the line of code causing trouble. Is there any way to get around it and find the UID value?

c0d5r
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  • Please show the error and the code producing it. See [How to ask](https://stackoverflow.com/help/how-to-ask) and how to make a [Miminal, Complete, and Verifiable example](https://stackoverflow.com/help/mcve). – Arya McCarthy Apr 21 '17 at 19:17

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U can try using PN532.It is available in the libraries(manage libraries) of he arduino.

Mathews Sunny
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  • Correct me if I am wrong, The PN532 you mentioned, will it work for RFID, everywhere in there I see NFC.. – c0d5r Apr 21 '17 at 15:29