More and more people are getting credit cards with a built-in RFID chip in them. That little RFID chip (Radio Frequency ID) can transmit your credit card info out several feet when it is scanned by any reader. Most people don’t know this.
You can tell if your credit card has an RFID in it because most cards will be marked by one of several symbols: PayWave, PayPass, or BLINK or the symbol that looks something like this )))) There are some cards that have no indication that there’s an RFID in them.