Does an RFID wallet contain any chemical addictives?

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RFID wallets function primarily as a Faraday cage, blocking unauthorized radio waves rather than relying on chemical additives. The composition of materials, such as leather, can vary, with vegetable-tanned leather containing fewer chemicals than chrome-tanned leather. However, the residual chromium in chrome-tanned leather does not impact the wallet's ability to block radio waves. Typically, an RFID shield is integrated between the layers of the wallet's material to enhance protection against unauthorized card reading.
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Does RFID wallet or any other wallet that suggest to be protecting contain any chemical addictive or have a different composition of material so that they can protect against unauthorized card reading?
 
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The way they work has nothing to do with chemistry, it is just a Faraday's cage blocking radio waves.
 
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Lots of chemicals in leather, though. Veg tan leather has fewer than chrome tan leather. Most consumer leather wallets are chrome tan. The residual chromium has no effect on radio waves though.
A shield is glued between the various layers of leather or whatever material the wallet is made from.

You canhttps://tandyleather.com/products/rfid-shield-paper-3-pack!
 

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