In a method and apparatus for paying for recrediting of an electronic postage meter machine, switchable into a reloading mode, and communicating with a data central, data is entered into the postage meter machine and the postage meter machine is switched into a communication mode or into a credit...http://www.google.com/patents/US5729460?utm_source=gb-gplus-sharePatent US5729460 - Method for payment of the recrediting of an electronic postage meter and arrangement for the operation of a data central 
