Smart Phones have changed many aspects of life that we probably don't recognize or have yet to utilize to its full potential given the relative novelty of the technology. PEO Soldier released this video overview of their NETT Warrior system now being utilized for a number of applications. Clearly situational awareness is a key utility of this technology and will certainly give an edge in avoiding friendly fire, but the expansive possibilities with additional Apps is a cumbersome task to ponder.
It is exciting to be alive in an age where these developments are at their infancy and the potential for improvement in utility is quite vast. The benefits are often unseen since you can't see statistics for lives saved, but you can see where technological advancement in soldier protection has played a huge role.