Do Anti-RF Shields, Sleeves, and Wallets Work?
With all the privacy and security concerns about contactless key fobs, credit cards, payment cards, employee access cards, and e-passports, it's not surprising that several companies have popped up offering anti-RF (radio frequency) sleeves, envelopes, wallets and other forms. Kena Kai is one of the latest. Do any of these anti-RF forms work? Do they block out all appropriate frequencies? Digital Money World recently did a test of some anti-RF products, for different radio frequencies, and they discuss their results.
While some might see the warnings about security as a play for selling anti-RF product, research has proven that vulnerabilities do exist. My feeling is that these items are a good idea, and that contactless card issuing companies should include these as standard issue, after conducting their own tests, instead repeating their disproven mantra that their cards are secure. The same goes for the government and e-passports, etc. Stop saying what you think consumers want to hear and prove it.

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