Costco is testing a new approach to cracking down on nonmembers entering its stores. This comes after the retail giant noticed an increase in nonmembers sneaking in with cards that don't belong to ...

NEW YORK -- Bad news if you're mooching off of someone else's Costco membership: The retail giant is cracking down. When you enter Costco, you need to show your membership card to an employee to shop.

Costco is shaking things up, and it’s looking to rival Sam’s Club for inspiration. During the company’s third-quarter earnings call, CEO Ron Vachris teased new technology aimed at making checkout ...