Ancient Fort Security Code in ARC Raiders

The Ancient Fort Security Code is a temporary code used to unlock a main gate within the Ancient Fort area during the 'Locked Gate' map condition. You need four of these codes to open the gate. Find this item in lootable containers located in the Ancient Fort area of the Blue Gate map. To use a code, go to the Gate Control Room on the Blue Gate map, enter the building, and submit it at one of the four terminals. Submitting a code removes it, but you can collect multiple codes across raids and extract with them.