Fix for combat logging and alt account sniping.
Reason for: Upon engagement with enemy players, players are free to log out at anytime they are not unconscious, prior to taking damage, or firing upon someone in the middle on an encounter. This is a fundamental flaw in Dayz. Players are also free to combat log as much as they want and see through buildings and repeat the process over and over till their teammates neutralize the enemy combatants.
Players are also able to log into accounts situated in strong firing positions and sniper players and then just log out in same position to hide themselves. Another fundamental flaw.
Players cannot logout within a 150m radius from where they last took damage or fired a weapon.