Smart bullets aren't new, but they're still early in development, and they have some drawbacks.
If DARPA, aka the Defense Advanced Research Projects Agency, has its way, smart bullets will become a very real thing.
Beyond offensive combative measures, guided smart bullets can be used to defeat future threats from swarming UAVs to incoming missiles.
Smart bullets currently availableAs of this writing, smart bullets aren't being deployed.
Regardless, smart bullets could provide a new surgical option for snipers, infantrymen, and naval personnel.