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Generally in this case i would say there will be no significant downside, since the pcb-thickness is only usually around 1-1.6mm. This does not influence the reader. In most cases there is space of air and an enclosure between the tag and reader, which is a much greater distance than just the pcb Yes, the tags are equally effective.


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Antennas of NFC tags are typically made of coils with one or more windings. When current flows through the coil, it generates a field that goes through the center perpendicular to the coil surface. If you put anything conductive (like a circuit board) behind or in front of that coil, it will prevent the magnetic field going through the coil. This reduces ...


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