Costco nationwide enforces card/QR scan policy to prevent "borrowed memberships" and boost sales.

Costco is nationwide implementing a new policy to prevent "borrowed memberships". Members must now scan their cards or QR codes upon entry. This follows similar strategies by Netflix to combat shared passwords and is expected to boost membership sales. The policy, initially tested in California locations, will encourage non-members to purchase memberships to access Costco's deals and services.