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There Are Plenty Of RFID-Blocking Products, But Do You Need Them?

Pickpockets don't actually have to pick your pockets anymore. That's the message you might see on TV or in ads warning that hackers can access your credit card data wirelessly, through something called radio frequency identification, or RFID. In the last few years, a whole RFID-blocking industry has sprung up, and it survives partly on confusion. In videos like this YouTube demo, a man holds a black scanner the size of a large remote near a woman's back pocket and, voila, he's got her credit card number and expiration date. That's because her card has a tiny RFID sensor chip.

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