Learn how to unlock a door without a key with these simple tricks:
Opening a door with a credit card works only on a Doorknob’s because it has a curved latch bolt – the part that slides into and out of the strike plate on the frame. The idea is to slide the credit card in between the door and the frame where the doorknob curved latch located, wiggle the card back and forth and pushing the latch back into the door. This may take some practice, but it is easy to learn.
Tip – try to push or pull on the door while sliding the card back and forth.