A method, system, and computer program product are described for delivering smart services. According to an exemplary embodiment, a method for delivering smart services includes receiving a request to determine an availability of a service subscriber. A situation of the service subscriber is determined...http://www.google.com.hk/patents/US8145581?utm_source=gb-gplus-share專利 US8145581 - Method, system, and computer program product for delivering smart services
