costco shoppers exiting the store by the membership counter
Although Costco is the third-largest retailer in the world, it actually makes most of its profit from membership fees.
  • Costco says it's rolling out member ID scanners to local warehouses "over the coming months."
  • The wholesale club previously tested the tech at select locations earlier this year.
  • The move extends Costco's Netflix-style crackdown on unauthorized membership sharing.

It's official: Costco ID scanners are here to stay, with more coming to warehouses across the US "over the coming months."