There's a locked door in Conditioning with a strange emoji keypad in Poppy Playtime: Chapter 5, here's how to get the code to unlock it.

Poppy Playtime 5 offers a variety of puzzles as players progress through different levels and reach the chapter's climax.

Chapter 5: Broken Things of Poppy Playtime is full of puzzles, chase sequences, collectibles, and even some new friends.