Engineering360: "Autonomous drone can distinguish the living from the dead"

Excellent. Killer drones won't waste bullets on corpses.

A bigger challenge is to identify the ambulatory dead (zombies) from the living .

Seriously, it's a move in the right direction but making a judgment on just shallow breathing seems like it would be likely to miss potential survivors. I expect the end product will need to check more signs and do some triage.

You could remote taze them and see if they twitch.