The Costco membership card rules guide 2026 covers a subject that most members never think about until a scanner beeps at the front door or a friend asks to borrow the card. Today is October 22, 2026, and with the holiday rush coming, more first-timers, guests, and visiting relatives will be walking in. This guide explains what has been reported about entrance scanning, photo ID, guests, household cards, and the Executive reward, so you know what to expect. An important hones