Using a Biometric Scanner is your best option if you need extra XP or Cash Bonus in Call of Duty MW3 Season 3. So, if you are a new player and need to know any Keycard locations in MW3 Rebirth Island, here is a complete list of all the places in the game.
All Biometric Scanner Locations in MW3 Rebirth Island
The biometric Scanners are located in 7 different locations on the map. Use the map below for a pictorial reference of each area.

- Chemical Engineering: It's on the bottom floor of the main building and is easily accessible from the north side.
- Harbor: On the bottom floor of a secluded building northeast of the main building POI.
- Prison: On the second floor in between the stairs.
- Headquarters: In the basement of the central building near the right staircase.
- Factory: You can find the Biometric Scanner on the 2nd floor of the building.
- Living Quarters: Inside a small cross-shaped structure to the north of the main building
- Stronghold: On the ground floor of the big building north of the POI.
How to use a Biometric Scanner in MW3 Rebirth Island
Once you locate a Biometric Scanner, interact with it to obtain a keycard with varying rarity. Take this keycard to any buy station to redeem for Bonus Cash Rewards and XP.
Keycard Type | Rewards |
Bronze Keycard | Ammo, Cash & Armor Plates |
Silver Keycard | Bronze Keycard Rewards & Perk Package |
Gold Keycard | Silver Keycard Reward, Plate Carrier, & Field Upgrade |
Platinum Keycard | Gold Keycard Rewards, Epic Field Upgrade & Killstreak |
Polyatomic Keycard | 1 Classified Weapon and 5 free items at Buy Station |
Orion Keycard | 2 Classified Weapon and 10 free items at Buy Station |
For more on Call of Duty, check out How to unlock and launch a Nuke on Rebirth Island in Warzone or All Hardpoint rotations in MW3 on Pro Game Guides.