R F shield fabric at Watchful Eye Designs
Watchfuleyedesigns.com has an interesting new item - Shieldsak.
I've ordered from them in the past - good service. quoting their website:
"Item Description Identity theft is easier than ever with the new addition of embedded electronic data chips in passports and credit cards. Even the chips in mobile phones store pertinent information. The SHIELDSAK consists of flexible R.F. shield fabric and Velcro that will not allow data scans by blocking electronic signals from reaching data transponders. Now you can be certain information is scanned only by legitimate authorities. Protect yourself, your identity and your safety with SHIELDSAK. SHIELDSAK fits neatly into our ALOKSAK 4 X 7 for complete protection from all elements. "