So apparently now at Costco, you have to have a membership ID that has a photo of you on it and they won’t even let you get in line to pay for your stuff unless you show your Costco card with a photo ID or with a photo on it if you have a Costco card that doesn’t have a photo on it then you have to show them your drivers license and they won’t even let you get in line until you show this. At the other place we don’t have to do this and we don’t have any issues with getting checked for membership through the store.
I have never been allowed even inside a Costco without having my card scanned. As in, they scan them on the door. Sometimes there’s a short queue to enter, and it’s always been this way as long as I’ve been a member. Perhaps it’s different elsewhere in the world?