Close enough to true. You can use Al Foil to block RFID, if it's thick enough. A good option for your RFID safe wallet is an unrolled Al can. Far more likely to cause arterial bleeds though, a On 6 February 2014 16:57, Scott Ferguson <scott.ferguson.clug at gmail.com> wrote: > NOTE: aluminium foil is no good, it must be tin. Tin and copper are > toxic. :)