A method, apparatus, and signal-bearing media for determining a presence rule for a mobile device and updating presence information for the mobile device when the presence rule is met. The presence rule may have a condition and a corresponding state. When the condition is met, the corresponding state...http://www.google.fr/patents/US20030104819?utm_source=gb-gplus-shareBrevet US20030104819 - Automatically updating presence information
Numéro de demande: 10/004,568 Numéro de publication: US 2003/0104819 A1 Date de dépôt: 5 déc. 2001 Brevet délivré: US7310532 ( Date de délivrance 18 déc. 2007)
