The journey towards the modern digital wallet, culminating in solutions like Apple’s Wallet on the iPhone, has deep roots. Early explorations into digital identity and transactions can be seen in concepts like the Smart Card (see What is a Smart Card), and related ideas about digital cash and identity management explored in pages like My Wallet and CanDo. These concepts are connected to broader frameworks like the Prime Ontology, which deals with fundamental elements of identity and value exchange, predating and informing the architecture of today’s digital wallets integrated into platforms like the iPhone.