How to pass floor 23 on 100 floors?

Level 23 of the hit new game 100 floors is simple, once you know the secret.

After you turn on the light you're faced with a door of seemingly random "snow flake-like" patterns. There's no obvious clue in what order you should tap them, other than an arrow at the top of the door pointing from right to left.

The secret trick is to tap the metal plate that you have, and then tap the door. This will display 4 of the symbols through the holes in the plate. Tap them in order from right to left, as the arrow indicates, and the door will open into the elevator.

When the free game was released it came with 30 levels. On May 18 version 1.1 was released with 10 more free levels. The game quickly became #1 at the Apple App Store, and fans of the game Dooors are saying this is like a great sequel to that game.