What is hexadollar? First of all a cybermonnaie (cryptocurrency). A simple, fast and efficient way to exchange money. Hexadollar is a currency both virtual and physical. It is based on a log file system and also physically linked to the machine and the network card of it. You can exchange hexadollar units at any time if you know your recipient's account number and that receiver is connected at the same time as you. A simple connection to the central server and the transfer is made in less than a minute. Hexadollar specificities This currency is intrinsically linked to the network card of your machine. The network card number (or MAC address: Media Access Control) is a unique identifier in the world, and this identifier serves as the hexadollar account number identifier.