RFID sniffer

RFID sniffer

About this project

RFID is everywhere. Use the easy to build RFID sniffer to find out if objects are tagged.
The RFID sniffer is a simple analog electronic circuit which can detect the presence of 13.56 MHz RFID tags. These tags are commonly used in all kinds of plastic cards like access badges, bank cards, library cards, loyalty cards and so on. Also many other objects may carry RFID tags without you knowing it. Books, toys, and even clothing might be tagged. Carrying tagged objects with you can reveal your identity or whereabouts to anyone equipped with the appropiate tools to read RFID tags.
The RFID sniffer helps you identify which objects are tagged, and which are not.

SL018 library for Arduino

RFIDuinoPosted by marc 2010-05-12 17:48
The SL018 library for Arduino is available. Examples are included for reading the UID of tags, and for reading/writing of tags.

  • Comments(10)

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Posted by Alejo Rios M 2014-10-23 03:33

Hello Marc

Thank you for your library. The examples work great. Can you help me with something, I can't figure out is how to use a WriteKey :/

Can you explain it in an example please?

My email is alejo_0001@hotmail.com


Posted by varun arora 2014-02-24 10:05

Hello Marc,
Thanks for the library, but I am not able to authenticate the sectors in my RFID tags.
Please help me resolve this problem.
My email Id is vr.arora1@gmail.com


Posted by rfid 2012-05-29 09:53

can search on rfidshop.net to check all the modules we have and with better price .

Posted by rfid 2012-05-29 09:52

I have the exactly same module SL-018 as strong link ,but better shipping price .

Posted by Genesisfactor 2012-05-29 05:33

Big props and thanks!

Posted by MarcelV 2012-02-10 21:19

Hello Marc, thank you for your great library. The examples work great. The only thing I can't figure out is how to use a MasterKey. Can you explain it in an example please or tell me what steps I have to make. I have been searching around but could't find one.

Posted by ls6 2011-07-15 18:05

Marc, thanks for the library :)
I have posted a short intro for beginners here: http://ls6.posterous.com/arduino-and-nfc-part-1

@Martin: I'm going to use two readers, so if you are still planning to do your project, keep an eye for part 2.

Posted by Ash 2011-06-05 16:47

It works awesomely with my Teensy 2.0. Thanks for the lib! :)

Posted by spacedog 2011-01-11 21:42

Hi Marc, thanks for the lib, works like a charm on SL018 V2

Posted by Martin Kaltenbrunner 2010-12-09 13:49

Hey Marc, I'd be interested in using your library with multiple SL018 readers on a single I2C bus. Before I am actually going to spend money on the eight readers I need, I wanted to ask you if your library supports multiple readers, or could easily changed to do so. Also I'd be interested to know if a single reader device can detect multiple RFID tags at the same time ... Many thanks, Martin.K