Entropay was a virtual prepaid card service that allowed users to create virtual Visa cards for online transactions. Launched in 2003, it provided a secure and convenient way to make payments, especially for those without a physical credit card. Users could fund their Entropay cards with various methods and use them wherever Visa was accepted online. However, in 2019, Entropay discontinued its services, and existing users were required to transfer their funds to alternative payment methods.