Keycards are a major and necessary element of the game, as being the only item in-game that can open doors with a keycard slot. Keycards can be found in various places. There are six keycard levels, from 1 to 5 including Omni.
Level 1[]

The level 1 keycard is the lowest level card.
The keycard can be obtained:
- On the shelves of the storeroom.
- In a storage room of the SCP-970 Hallway.
- In the 2-level office, next to a computer.
- By placing a MasterCard, a Playing Card, a Coin, or a Quarter into SCP-914 on the "1:1" setting.
- Randomly by putting any item into SCP-1162.
Level 1 keycards can be used to open the first door to the small testing room.
Level 2[]

The level 2 keycard can be obtained:
- In the basic office.
- In the small testing room.
- By placing a Level 1 Keycard into SCP-914 on the "Fine" setting, which might instead output a MasterCard based on the "Other difficulty factors" setting. (Guaranteed on Safe/Easy; 4 in 5 chance on Euclid/Normal; 3 in 4 chance on Keter/Hard)
- By placing a MasterCard, a Playing Card, a Coin, or a Quarter into SCP-914 on the "Fine" or the "Very Fine" setting.
- Randomly by putting any item (a Level 1 Keycard has a bigger chance to output the card) into SCP-1162.
Level 2 keycards can be used to open:
Level 3[]

The level 3 keycard can be obtained:
- Next to SCP-895 in its containment chamber.
- By placing a Level 2 Keycard into SCP-914 on the "Fine" setting, which might instead output a MasterCard based on the "Other difficulty factors" setting. (Guaranteed on Safe/Easy; 3 in 4 chance on Euclid/Normal; 2 in 3 chance on Keter/Hard)
- Randomly by putting a Level 1 or a Level 2 Keycard into SCP-1162.
Level 3 keycards can be used to open:
- The main door in SCP-012's chamber.
- SCP-079's chamber.
- SCP-205's chamber.
- SCP-966's chamber.
- All the doors in the SCP storage chamber.
- The first door in Containment Room 5.
- The surveillance Room.
- All the doors in the server hub.
- The checkpoint room between the Light Containment Zone and Heavy Containment Zone.
Level 4[]

The level 4 keycard can be obtained:
- On the desk in SCP-049's chamber.
- By placing a Level 3 Keycard into SCP-914 on the "Fine" setting, which might instead output a Playing Card based on the "Other difficulty factors" setting. (1 in 10 chance on Safe/Easy; 1 in 15 chance on Euclid/Normal; 1 in 20 chance on Keter/Hard)
Level 4 keycards can be used to open:
- The head office.
- SCP-106's chamber.
- The two doors to the lower area of SCP-106's chamber.
- Both doors in SCP-008's chamber.
Level 5[]

The level 5 keycard is the highest keycard that can be obtained. Both this, and the Omni card, can access any rooms requiring a keycard.
The level 5 keycard can be obtained:
- In SCP-106's chamber on a shelf beside the controls.
- On the desk of the head office.
- By placing a Level 4 Keycard into SCP-914 on the "Fine" setting, which might instead output a MasterCard based on the "Other difficulty factors" setting. (Guaranteed on Safe/Easy; 3 in 4 chance on Euclid/Normal; 2 in 3 chance on Keter/Hard)
Level 5 keycards can be used to open:
- SCP-035's chamber
- The door to the elevator leading to the warhead room as well as the door leading into the small control room inside.
- The checkpoint room between the Heavy Containment Zone and Entrance Zone.
- The blast door to reach Gate A.
Omni[]

The Omni keycard is a blue and white keycard with no text in the centre of the keycard unlike the levels 1 to 5 keycard and can access anything requiring a keycard, making it equivalent to a level 5 keycard.
The Omni keycard can only be obtained:
- By placing a Level 5 Keycard into SCP-914 on the "Fine" setting, which might instead output a MasterCard based on unlocked achievements and the "Other difficulty factors" setting.
- By placing any Level 1 to 5 Keycard into SCP-914 on the "Very Fine" setting, which might instead output a MasterCard based on unlocked achievements and the "Other difficulty factors" setting.