MW4 Code Locations vs Keycard Routes: Faster Unlock?
This article compares two unlock methods in Modern Warfare 4 (MW4): finding and entering code locations versus following keycard routes. It answers which method is faster and explains the trade-offs of each approach. You will learn the typical time investment for both methods and how to choose the right one for your playstyle.
Background: The Two Unlock Systems
Modern Warfare 4 features two primary ways to access locked doors, safes, and supply caches. The first is a code system where you must locate a physical code (often on a whiteboard, a note, or a computer screen) and then enter it at a nearby keypad. The second is a keycard system where you must find a physical card (sometimes on a guard, in a drawer, or on a desk) and then use it at a card reader. Both methods are common in the game’s campaign and Spec Ops missions, and each has its own spatial and time requirements.
How Code Locations Work
Code locations are static spawn points that appear in a mission. The code is usually written on a surface or displayed on a screen within a few meters of the locked door. To use it, you approach the code, read it (which takes about 2 seconds of screen time), then walk to the keypad and input the digits. The keypad input itself takes about 3 seconds if you type quickly, but you may need to re-read the code if you forget it.
- Typical time to read code: 2-3 seconds
- Typical time to input code: 3-5 seconds (including walking to keypad)
- Total per door: 5-8 seconds if the code is near the door
- Risk: Low, but you must be stationary while reading
How Keycard Routes Work
Keycard routes require you to find a card that is often in a different room or on a patrol path. The card is a physical item you pick up, which takes about 1 second. Then you must travel to the locked door, which can be 10 to 50 meters away. The card reader interaction is quick (about 1 second), but the travel time is the main factor.
- Typical time to pick up card: 1 second
- Typical travel time to door: 5-30 seconds depending on distance
- Total per door: 6-31 seconds
- Risk: Medium – you may encounter enemies along the route
Which Is Faster? Direct Comparison
In most scenarios, code locations are faster because the code is almost always placed within a short walking distance of the locked door, often in the same room. Keycard routes, by contrast, frequently require backtracking or navigating through hostile areas. On average, a code unlock takes 6-8 seconds, while a keycard unlock takes 15-25 seconds. However, there are exceptions: if you already have the keycard from a previous pickup (e.g., a mission where you collect a card early), the keycard route becomes instant. Conversely, if you have to search for a code that is hidden, the code method can take longer.
Factors That Change the Speed
Several factors can flip the speed comparison:
- Map layout: In tight corridors, codes are faster; in open areas, keycards might be on your direct path.
- Enemy presence: If a keycard is on a guard you need to kill anyway, it adds zero extra time.
- Memorization: If you have played the mission before, you can memorize the code and input it without reading, cutting code time to 3 seconds.
- Checkpoint placement: If you die after picking up a keycard, you may respawn without it, forcing a redo. Codes are static, so you can re-read them.
Common Problems and Misconceptions
A common misconception is that keycards are always faster because they are a single item. In reality, the travel time is the bottleneck. Another issue is that players often forget the code after reading it, forcing a second trip. To avoid this, take a screenshot or note the code on your phone. For keycards, the main problem is that they are sometimes on a patrol route, so you must wait for the guard to reach a certain spot, adding 10-15 seconds of idle time.
How to Choose the Right Method
If you are playing for speed (e.g., a speedrun or a timed mission), prioritize code locations when you see them, because they are self-contained. If you are playing stealthily, a keycard route might be safer because you can move while avoiding enemies, whereas reading a code forces you to stop. If you are playing on a higher difficulty, the risk of dying while traveling to a keycard is higher, so codes are again better. For completionists, do both, but for speed, codes win.
Alternatives and Advanced Tips
Some players use a third method: breaking the door with explosives or a breaching tool. This is faster than both methods (about 2 seconds) but is loud and may alert enemies. Another alternative is to find a window or alternate entrance that bypasses the locked door entirely. In co-op, one player can read the code while the other inputs it, reducing the time to about 4 seconds. For keycards, if you have a teammate, they can pick up the card and bring it to you, but that is rarely faster than a code.
Frequently Asked Questions
Do code locations reset if you die? No, the code remains in the same place, so you can re-read it after respawning. This makes codes more reliable than keycards, which may be lost if you die after picking them up.
Can you memorize keycard routes to make them faster? Yes, but the travel distance is still the same. Memorizing the route helps you avoid enemies, but it does not reduce the physical distance, so codes still win in most cases.
Are there any missions where keycards are faster? Yes, in missions where you pick up a keycard early (e.g., from a scripted enemy) and then use it on a door that is on your main path. In such cases, the keycard is effectively free, while a code would require a detour.
What is the fastest way to input a code? Use the on-screen keypad and type the digits without pausing. If you have the code memorized, you can input it in about 2 seconds. Do not wait for the animation to finish before moving; you can start walking away as soon as the last digit is entered.
Does the game tell you which method a door uses? No, you must approach the door to see if it has a keypad or a card reader. However, you can often tell by the type of door: keypad doors are usually metal with a small screen, while card reader doors have a red/green light.
Are codes ever randomized? In the campaign, codes are fixed per mission, so you can learn them. In Spec Ops, some codes are randomized, which makes keycard routes more predictable if you know the card spawns.
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