As more and more credit cards and other documents come equipped with RFID tags—the tiny radio-frequency identification chips that beam your account or ID info to readers used by various services (public transportation, toll road fees, etc)—the more speculation has surfaced on how malicious ID thieves could potentially use similar readers to lift your personal data without your knowledge. Thankfully, it's pretty simple to keep your info protected right in your wallet. Web editor Megan Miller demonstrates above.

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