If you don't want to detect a presence of RFID reader or even make your own RFID tag, than you should look away. If by any chance you want to but you don't know what RFID is, it is best for you to read this text. Now when we know the basics, let's move on.
You will need a copper tape, plastic or cardboard base, capacitor and one LED. Ofcorse, for testing purposes you will need RFID reader.
Source: nmarquardt=>elektronika.ba
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