How to Build an RFID Tag Detector - part 1: theory

Part one of a series of five videos in which I demonstrate how it is possible to detect RFID tags that are hidden from sight.
In this videos I explain the theoretical ideas behind RFID and how a detector circuit can be built.
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[@bobjohnson6818]

The video that started it all.

[@abdulmsiddiqui4344]

You're my favourite TH-camr

[@flanlemonjello]

I found your description of the circuit was very clear and well done, thank you!

[@jesus.christis.lord.foreve899]

Most enjoyable video
Thank you !

[@andrewmcneil]

I wonder if any shoplifters have got caught stealing the parts to build this! Great set of videos.

[@ThePostApocalypticInventor]

Well I never said, that it couldn't have "alternative" uses as well ;P
But that's of course not what I hope people will use it for...

[@danielwoody865]

Wish we had your original videos on the zapper reloaded on your channel. Please reload.

[@TannerTech]

Great videos! But I was wondering, would I be able to use the popular LM386 op-Amp as a replacement to the op-Amp you used in your video? And would a negative rail of my power supply not be needed since the LM386 does not need a negative rail? Thank you for the awesome videos!

[@terminashunator]

I'm curious, in your intro for your videos, you have a wheeled rover-type vehicle, what video is that from?

[@eselmoestuin3126]

thx man

[@agredo]

Hi, I am very interested on this, it is exactly what I am looking for, a Tag detector, not need to read info, just to detect the tag, could you please do a test for me and insert the tag inside a large aluminum pipe or can, and see if the your detector can find/read it? if not, but modification it will need to amplifier the power and get the signal trought the metal pipe. Thanks so much

[@shaytan1313]

great vids, and just one question, is the voltage reference circuit used in the model shown in the demonstration, or is it just the voltage divider?

[@ThePostApocalypticInventor]

The voltage reference circuit is used in the model.

[@shaytan1313]

ok thanks for the quick reply!!

[@tanmaychaudhari3577]

Can you list the values of the components used in the circuit?
Also can this be modified to make a reader for detecting 125kHz rfid tags?

[@noneuno53]

i would like to have one that and see all the khz and mhz.

[@20_below]

I've never seen the video about finding RFID tags in clothing, was it removed?

[@kojomensah7474]

hat I like to know is how do we detect the smaller robut that they r making now

[@sergenarivonchik9006]

Just glad I downloaded the zapper and the reader vids years ago u can see how it relates to the movie enemy of the state... Where a long time ago they were showing how they wanted to put chips in all your clothes

[@danielwoody865]

Can you send me the zapper videos? They were taken off his channel.

[@danielwoody865]

Oh yeah you reposted a grainy MIRROR of the originals.

[@sergenarivonchik9006]

Can u test if somone can detect tags then microwave the article of clothing and see if it is destroyed

[@muhammadfathurrahman9249]

What is RFID tags tho

[@sergenarivonchik9006]

If all phones are readers then even once the cloud data has all the tags associated with you it dosent matter if u leave Ur phone at home anyone u pass on the street with a phone it could pick up and identify u through the tags in your clothes

[@rabakomaba4562]

I heard very good opinions about the Woodglut plans.