Currently on Official servers, numerous microsoft accounts can be created and used to play DayZ. These users are able to abuse the punched card mechanic to keep a character inside the bunker solely to camp and allow teammates inside, therefore bypassing Livonia’s loot progression in its entirety.
While the problem with alt accounts can’t be resolved by BI directly, I suggest the devs add a feature similar to dynamic toxic zones where if a player logs out inside of the bunker, they will be moved outside but nearby upon logging back in. This feature already exists in the game and would help balance those playing the game as intended against exploiters.