The trade by barter system
Examples include the Owenite socialists, the Cincinnati Time store , and more recently Ithaca HOURS Time banking and the LETS system. Salt was so valuable at that time, that the salary of Roman soldiers was paid in salt. Execute the trade and start searching for your next great exchange. Today, physical currency is not required, as electronic money is widely used for monetary transactions. Just make sure you let the other person know someone will be accompanying you for their peace of mind and caution.