I've only just started in Day Z and saw my first person in game... they were holding a gun at me, I only had a flashlight (not turned on as I couldn't figure out how to turn it back on after I turned it off... ) but I waved that at him and he must have figured I was useless to him so he ran off :) So it's not all bad in the game (I guess it also helps not actually having anything of worth on me :P )