The Mobile Wallet, the result of a rapidly and successfully growing digital ecosystem, addresses the challenges of technology-driven and innovative lifestyle, purchasing, and payment processes. Innovative payment mechanisms, such as first-generation mobile payment systems, have almost universally failed so far, as a limitation to a somewhat simplified payment function via smartphone has not convinced either merchants or customers in Germany. The vision of the Mobile Wallet is to digitize additional services such as tickets, coupons, loyalty cards, as well as previously physical items like identification documents and keys into an application on the smartphone and to bring them together for use. The aim of this book is to analyze the current business models of the Mobile Wallet and to demonstrate them through a concrete comparison.