Costco gets serious about sharing their exclusive discount card. The outlet center is carrying out a necessity for clients prior to customer entrance. The warehouse giant has started a crackdown on membership sharing, which may start to thin out Costco's notorious crowds. It's a move that's drawing a lot of attention and strong emotions. Executives at Costco also anticipate increased profits. As the wholesale retailer continues to crack down on unauthorized membership usage, Costco has officially begun installing new membership scanners throughout California. Presently, individuals will be expected to check their participation cards prior to entering the outlet center.