In one embodiment, device presence enables persistent access to a set of resources, which may be data or services. Unique device identifiers are assigned to different computers of a user to identify the computers of the user of a network. For example, a device identifier is specific for a user and specific...http://www.google.fr/patents/US7853703?utm_source=gb-gplus-shareBrevet US7853703 - Methods and apparatuses for identification of device presence
Methods and apparatuses for identification of device presence
