It is interesting to note that the wallet as we historically know it — that is, a physical object, approximately flat, designed to hold cash, cards, and other items roughly 3” x 2” in size — was invented concurrently with paper money, almost 350 years ago. Another 200 years would elapse before the object itself became a fashion curiosity, wallets initially being more purpose built. Although the literal size of one’s wallet, and what that projected about one’s status and wealth, has been a foc...