Both Google Glasses, Narratives (Memotos) that record and takes photos more or less without the surrounding knowing it does, it’s debated that these gadgets is a intrusion of privacy. But what if the gadget recorded a violent crime and that could be solved because of the recording. Then I would expect that many of the people concerned about these new devices would think that the gadget was very good. So there is always a god and a bad side of things. I think that these kind of devices could help solving crimes when they get out into the public. I believe that people will be more willing to record ongoing crimes and send the movies to the police than ever before, because there is less chance that the criminals see that they are recorded.
And hopefully they will do more good than evil, only the future can tell.