For example, I hold both the Chase Sapphire Reserve and The Platinum Card from American Express. Both of these cards give me access to Priority Pass, so I have two separate membership cards. The great thing about Priority Pass is that the card number is different for each credit card, and not tied to your name.

Yes, it is possible—and actually quite common for frequent travelers—to hold multiple Priority Pass memberships simultaneously. This typically happens if you have more than one premium credit card (such as the Chase Sapphire Reserve and the Amex Platinum) that each offers a "Priority Pass Select" membership as a built-in benefit. While the memberships are issued to the same person, they are treated as entirely separate accounts by Priority Pass. This can be strategically useful because different cards may have different guest policies; for example, one card might allow two free guests, while another might charge for every guest. However, it is important to note that you cannot "stack" or "merge" these cards to bring more guests into a single lounge visit; you must choose one card to scan at the front desk. Furthermore, having two cards does not allow you to bypass the "re-entry" rules of a specific lounge. To manage multiple cards, many travelers use the Priority Pass mobile app, which allows you to log into different accounts (often requiring separate email addresses) to access your digital membership QR codes and track which card offers the best benefits for your current airport location.