http://www.newsnet5.com/money/consumer/ ... -card-scam
The scam works because some businesses rely on satellite equipment to relay credit card information once a card is swiped inside the store.
Criminals then have the opportunity to climb onto the roofs of these businesses and put aluminum foil over satellite antennas to block credit card communications.
Cleveland FBI Special Agent Vicki Anderson told NewsChannel5 once the satellite equipment is blocked, the crooks will then make their way into the store and are using bad credit cards without necessarily being detected.
"They'll interrupt the signal and then they'll go in the store and purchase high-end items, and when that credit card is not authorized, a lot of times the businesses will allow it to go through thinking that they'll validate it later," explained Anderson. "When they do that, later they'll find out it was a bad credit card."