A system provides an efficient way of providing electronic accounts to customers over a public network, in which all payments are traceable, i.e. anonymity is available to the degree that the customer provides an account number for paying for the transaction, and that uses as much as possible of emerging...http://www.google.de/patents/US6138107?utm_source=gb-gplus-sharePatent US6138107 - Method and apparatus for providing electronic accounts over a public network
