Strangely, just two days after I wrote this, my house mate went out and locked me in the house. I had to climb out the window and unlock the door from the outsi

Strangely, just two days after I wrote this, my house mate went out and locked me in the house. I had to climb out the window and unlock the door from the outside. I have a key, but I did not know the one deadlock has a different key for the inside and outside.