> Anyone ever used RFID products from microchip or others for
> that matter?  I read that the coil part can be as thin as paper but
> I dont see how that could be?  id like to put them on the side
> of things and be able to read them...is that possible?  I dont
> want the coil part to poke out very much.  Does that make sense?

Have you read Microchip's documentation ?

http://ww1.microchip.com/downloads/en/AppNotes/00710c.pdf

http://ww1.microchip.com/downloads/en/AppNotes/00678b.pdf

Describes the inductance calaculations for antennas. How thin
you have the wire is up to you. Could be a trace on a PCB or
copper embedded in plastic sheet (like those connector ribbons)

I wonder if conductive ink would work ?

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