For members of a certain generation, the expression “digital wallet” is an oxymoron, transforming reassuringly cold, hard cash into the uncertain and possibly vaporous virtual world. And, in fact, the term digital wallet is a bit of misnomer, generally referring to an “app,” or downloaded online application, that is accessed through that new ubiquity of the modern age, the smartphone. Thus, digital wallets are also dubbed “mobile wallets” or “e-wallets.”