Embodiments include a device, a system, a computer program product, and a method. A system embodiment includes: a display surface operable to display electronic content in a manner perceivable by a person; a sensor apparatus operable to acquire data indicative of a response by the person to a first electronic...http://www.google.fr/patents/US8112407?utm_source=gb-gplus-shareBrevet US8112407 - Selecting a second content based on a user's reaction to a first content
Selecting a second content based on a user's reaction to a first content
