Owners of smartphones running Android Jelly Bean have probably noticed that their operating system had undergone an update and that their phone are autonomously sending push information. Bus schedules, restaurant menus, sports, notes are now being displayed automatically on the screen without your intervention (but at the right moment).
The explanation is called Google Now. This is Google's answer to Apple assistant's Siri. Both systems have been designed to optimize search on mobile devices, yet the two assistants are very different. *Unveiled in June and now in the hands of users, Google Now recognizes voice commands, but relies primarily on user preferences, search history, calendar, e-mails and the geographical position of the user - rather than on queries - to send timely information deemed relevant.
Discover Google Now