www.alumawallet.tv

I have looked at this wallet at Walgreens.  There are two aluminium clam-sh=
ells that do not quite fit together. On the edges of the clam-shells is a p=
lastic ring that supplies at latching mechanism and hinges.  This makes an =
approximately 5mm gap between the clam shells.

The wallet is claimed to block "scanning attempts" of the contents of the w=
allet.

Are the qualities of a Faraday cage related to the wavelength of the scanni=
ng radiation versus hole sizes in the cage ? =20
Do the two clam-shell halves require electrical continuity ?
Would an aluminium clam-shell which mated with it's opposite ..... using a =
tongue and groove fit .... be a much better Faraday cage or is this unneces=
sary ?

What level of conductivity is required to establish a Faraday cage ?  Would=
 a carbon fiber composite with copper particles work ?

One item this wallet should protect is NFC cards that operate at 13.56 MHz.

99guspuppet
--=20
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