Security Disc Metapuzzle Solution
How It Works
Placing a token on the Surface unlocked a ring of morse code and a second ring of 6 letters. Rotating the token rotated the corresponding rings. By aligning all 6 tokens properly, the letter rings could be unscrambled to form 6 6-letter dog breeds: COLLIE, POODLE, BEAGLE, SALUKI, IBIZAN, and BORZOI. This was hinted at by the "Dogs Playing Poker" image partially obscuring the morse code.
Aligning the letters to form dog breeds also aligned the morse. Players could then rotate the entire set of rings past the window to read the final message.
Solution
Ventilation shaft at cafe 86