Patent ID: 9380124
Filing Date: 2016-06-28
CPC Classification: H04L

Claim Text:
1. A system for determining an overall presence state for a user using a plurality of user devices connected to a network, each of the user devices storing in a user device memory of the respective user device an overall presence state for the user, comprising: a detector in each of the plurality of user devices for detecting a change in a presence state in at least one of said plurality of user devices; a transmitter in each of the plurality of user devices for transmitting, from at least one of said plurality of user devices, a message via the network to at least some other of said plurality of user devices, said message comprising the presence state effective to enable said at least some other of said plurality of user devices to each determine whether to synchronise their associated presence state with that of said at least one of the plurality of user devices; a receiver in each of the plurality of user devices for receiving other messages, containing presence state, from said at least some other of said plurality of user devices at said at least one of the plurality of user devices; and a processor for executing a decision-making code sequence in a processor of said at least one of said plurality of user devices to: