Sony has unveiled a prototype electronic notebook called Sony A4 digital paper, oriented to the education sector. Name of gadget a speaks for itself: with a special stylus,can recapitulate the lectures and annotate PDF-documents. Novelty is equipped with a 13.3 inch touchscreen E-ink display with a resolution 1200ı1600 pixels and has 4 GB of internal flash memory, a slot for memory cards microSD, and a module WiFi. The manufacturer claims that a single battery charge, using a wireless connection, enough for three weeks work. New products will be tested in three Japanese universities in the second half of this year, and later planned to release a commercial version of this gadget.