You don't have time to order an RFID-blocking device or happen to carry aluminum foil in your trunk. You could buy a $1 bag of chips, dump the snacks out, and use it to protect your key fob.

There's a way to fight back, though: Consider investing in an RFID-blocking wallet, passport case or bag. Most of the latest ... because not every key piece of info can be gleaned wirelessly.

RFID technology has ushered in a new era of possibilities for wearables, promising to reshape how people communicate and make transactions.