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How Can I Block a Specific Area Against a Reader's Electromagnetic Field?
Would this be difficult to accomplish?
Actually, it would be fairly easy to do. A sheet of Mylar—a brand name of biaxially-oriented polyethylene terephthalate (BoPET) polyester film made from stretched polyethylene terephthalate (PET) and known for its high tensile strength—would block the electromagnetic waves of a reader antenna, or you could simply use wire mesh or a sheet of aluminum.
—Mark Roberti, Founder and Editor, RFID Journal
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