We've all been there: You arrive at Costco, prepared to shop, only to realize you forgot your membership card. Assuming you're a member, you can still enter the warehouse and purchase goods. However, ...

The family-favorite retailer is changing the way it verifies membership. Have you been using a friend’s Costco membership card to get two-liter jugs of olive oil, pallets of toilet paper, or ...

Next time you head to Costco, make sure you have your plastic or digital membership card – and a matching ID. The members-only warehouse retailer is really starting to crack down on non-members.

Is your Costco Digital Membership Card not working? You are not alone. Some Costco members have been complaining about the digital card not working when they try to use it at the store. Costco is a ...

Costco members are usually asked to show their membership cards at the door. Business Insider spoke to seven Costco employees about what happens when a Costco member can't — or won't — show them their ...