Usage control method for service provision device e.g. automatic washing machine, stores transaction data for each authorized user for centralized billing

摘要

The usage control method has a contactless data carrier (2) issued to each person authorized to use the service provision device (1), communicating with a data card reader (3), in which personal data for the user is held in a memory (4), to allow the use of the service provision device. The power used by the service provision device is held in the memory, with stored transaction data for each user read from the memory by an operator using a portable data reader (5) for transmission to a remote data center (10).