Yes, you can, except for the Carbon Speed Wallet. Carbon fiber, being a very strong material, prevents most scan machines from reading through it. Therefore, you need to take your access cards out to use them. The Frenchie Wallet have RFID blocking capabilities on one side, ensuring the security of your information while still allowing you to use an access card when needed. The Slim Speed Wallets have RFID blocking capabilities only in the middle pocket, allowing you to use up to two access cards, one in each outer pocket.