I own [url removed, login to view] the world's first spam free email system which has been online now for over 10 years but has never taken off commercially even though it is free to open an account.
At its heart is a self funding micro payment system which allows clients to charge an amount of money (flag rate) to read any mail sent within the CRS closed system.
I have had an external payment system developed that allows CRS members to down load my payment software on to their own web business and receive payments for goods in either Australian dollars or gold or silver to 4 decimal places of a gram. This free software can be found inside CRS in the Gold Pages under Micro Payment.
I want to extend this system so that transactions can be performed between very close smart phones either by actually touching each other or by some other novel way. All transactions would be some how managed via the internet
Look forward to hearing from you.