A digital system that may be used by children two years old and older. The digital system is contained in a child-proof case and has an upward-facing display with a touch-sensitive screen that is within easy reach of a child. Other I/O devices include proximity and motion sensors and a microphone, and...http://www.google.fr/patents/US6920619?utm_source=gb-gplus-shareBrevet US6920619 - User interface for removing an object from a display
User interface for removing an object from a display
