Probably many of the victims of the Paris attacks were carrying smartphones with high res cameras and microphones.<p>Imagine if (by default) phones would switch to automatic monitoring mode when gunshots &#x2F; explosions are heard.  Statistical analysis could show a sudden jump in these sorts of automatic reports.<p>This seems like a straightforward sort of feature that perhaps may help in reacting to and investigating these sorts of crimes.<p>Something that Google &amp; Apple should step up and create.
Anti-Terror Mode For Phones