Record only the important things in your life
The dream of many media gangstas is it to have a constant record of the world surrounding, visual as well as audible (and possible in holographic quality). This "Feed" has been featured in quite a few science fiction writings (gibson etc pp) and as beeing heralded as the ultimate truth tool it is also a privacy fear device par excelance. Even if a camera inside your eyes and a direct soundfeed straight out of your brain would be feasable you still have that enormous amount of data where only a fraction would be interesting - sleeping would just produced a noozle sound and black pictures after all - and you sleep at least 1/2 of the time during the day (daydreaming included). This part of the problem seems to be solved by the Japanese Manabe Hiroyuki working for communication giant NTT DoCoMo. The device trains itself by looking at your attention peaks. Means when you daydream the device turns off an audio/video recording and saves the environmental setting as preset - so when you next encounter a similar situation it turns on automatically without consulting your brain. As anyone can see - this will probably stay away from massmarket at the moment. Original story found at engadget.