In the Central zone of Control Resonant, players can discover a secret puzzle hidden within the Wear'Em & Wash'Em laundromat. This puzzle requires interacting with the washing machines to unlock a hidden area containing a health upgrade point and lore collectibles. The solution is hinted at by a note found on a cork board at the back of the laundromat, which presents a grid of ones and zeroes that corresponds to the layout of the machines.
The laundromat itself is located in the southern part of the Central zone, west of the East Park Station entrance. Upon entering, players will notice many out-of-order machines alongside a few functional ones.
The key to the puzzle lies in activating only the washing machines that correspond to the '1's in the provided grid. All other machines must be left off. The grid on the cork board translates directly to the arrangement of washing machines within the laundromat.
Starting with the row of seven machines against the back wall (facing the cork board), the fourth machine from the left needs to be turned on. The subsequent row of six machines facing the player requires the third and fourth machines to be activated. For the third row, located back-to-back with the second row, the first and sixth machines should be turned on. The following three rows are all set to '0', meaning no machines in those rows should be activated. The final row, consisting of the six machines against the front wall, requires only the first machine to be turned on. Once these specific machines are activated and the rest remain off, a wall at the back of the laundromat will slide open, revealing stairs leading down to the secret area.