XPAY KNOWLEDGE
Industry WIKI
Digital assets and currencies
Understand assets, networks and trading mechanics with sources you can check.
Payments & settlement
Mondex
Mondex was a smart card electronic cash system, implemented as a stored-value card and owned by Mastercard.
Payments & settlementPrepayment for service
Prepaid refers to goods and services paid for in advance. Examples include postage stamps, attorneys, tolls, public transit cards like the Greater London Oyster card, pay as you go cell phones, and stored-value cards such as gift cards and preloaded credit cards.