SIGNALIS Guide | How To Solve Blank Key Puzzle

A guide on how to solve the Blank Key puzzle in SIGNALIS.

Game Guide by Sabi on Feb 24, 2025

In SIGNALIS, you need to solve a keycard puzzle so that you can exit a room and progress throughout the game. This guide will show you how to solve the Keycard Puzzle in the game.

Step 1: Locate the X-ray Room

SIGNALIS Guide, Step 1: Locate the X-ray Room

The first step is to go to the X-ray room. It is located in the top right corner of the map, to the northeast. Once you arrive, check the machine.

Step 2: Use the X-ray Machine

SIGNALIS Guide, Step 2: Use the X-ray Machine

You need to click "D" and then zoom in on the TV monitor. Then, activate the X-ray vision to view the exact mix of dots and lines on the keycard itself.

Step 3: Enter the Pattern

SIGNALIS Guide, Step 3: Enter the Pattern

Once you know the pattern, return to the computer, insert the keycard, and have eight moves to complete the pattern presented. Your pattern might be different from what you are seeing in the image.

Step 4: Adjust for the Diagonal Cut

SIGNALIS Guide, Step 4: Adjust for the Diagonal Cut

This is very self-explanatory. The only tough part is where the diagonal cut is on the card. This will allow you to properly orient yourself and print it.It can be disorienting, so if you really need to remember where it was, take a picture with your phone or use the eye module you discovered earlier in the process to take a screenshot of your screen and reproduce what you see there.

Now that this is in place, along with the final one required at the door, you should be able to exit this area.

Also, check our SIGNALIS Review and other guides below: