There's a post and comment trail over on Bruce Schneier's blog about RFID tags and shielding.
It includes a certain amount of discussion of DIFRwear's passport wallet - which happens to be the one I was referring to in my previous posts on the subject. I hadn't named it explicitly up to now for 'commercial endorsement' reasons, but as some of the commenters on Schneier's blog are casting aspersions on the DIFRwear product, I thought in fairness that I should weigh in in its favour.
My experience is that the passport wallet is good quality and the right size to hold an EU-format passport. As to its effectiveness - that will continue to be hard for me to test conclusively, but as my previous post reflected, it seems to work admirably with standard stored-value cards and readers.
All this DIY RFID talk tends to make one want to understand a bit more about how this invisible technology works... in which case a good place to go is Alec's blog, here.
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