I've pledged for a minimal wallet on Kickstarter: Wally Micro - The Minimal Wallet with a Few Surprises. As always comes up in these campaigns, people asked about RFID protection. So they did some research and a blog post: RFID: To Block – or Not To Block. They also referred to another article: The Skimming Scam.
A quote that I think sums it up:
Quote
The real threat to credit card hacking is in the form of ATM skimmers. Thieves place readers into any ATM or point of sale device where cards are read, and all of your data is collected. For them, it's much more efficient and they can gather thorough data in large quantities this way. Unfortunately, a foil sleeve or lined wallet can't protect you from this. The good news is the U.S. is finally adopting the Euro-style chip and pin pairing called EMV cards. They've been using this across the pond for nearly a decade, and it seems to be an effective redesign for minimizing fraud.
That's been my feeling for a while, and the fact that the human factor is a big issue, i.e. carrying everything and not knowing what you're carrying with big bulky wallets.
An an interesting quote from the Slate article: If you’re going for maximum efficacy, however, few [RFID shields] work as well as simply wrapping your cards in aluminum foil.









The cheapest I've gotten is the Dash 4.0. The most expensive, I don't even want to talk about. But there's quite a few choices out there, and each has its advantages and disadvantages. I just don't like back pocket wallets anymore.








