Stray: How To Enter Seamus Secret Room

You first encounter Seamus, an NPC, in Stray just after you assist Momo. You learn that there is a hidden room in the house after "breaking in" to Seamus' residence and that it might indicate where his father is right now. Climb up the kitchenette first, then press the triangle to remove the leftmost painting to reveal the hidden area. A keypad is visible here.

Go to the rightmost painting and press the triangle to knock it down in order to reveal the code for this keypad. Then you'll receive a tip with the phrase "time will tell," implying that it has to do with the clocks in the room. Examine the wall clocks by casting your gaze to the left. These clocks have a total of 2511 hours.

The secret area will become accessible if you go back to the keypad and type in 2511.