A method of normalizing transaction data pertaining to an access to a service provided by a service provider normalizes transaction data retrieved from a number of transaction data sources in the form of transaction servers that serve to broker access authorization between a first service provider and...http://www.google.com.au/patents/US20010034677?utm_source=gb-gplus-sharePatent US20010034677 - Method and system to normalize transaction data pertaining to accesses to a service provided via a plurality of service providers
