A credit card will only open a spring bolt--the kind of lock that comes with a standard doorknob. It won't work on a deadbolt. While pushing the card in, begin bending it away from the doorknob. When you feel it slide the latch back, the door should open.
Similar to using a knife, the credit card needs to be inserted between a door and a strike plate (the part that is mounted to the frame of the door that has a hole where latch goes in) and push the latch out. It has to be done multiple times until you are able to successfully reach a latch it the right way, so try changing an angle and a direction of the card. The problem with this technique is that most of the new locks, have a type of latch that is shimming resistance, but it’s still worth trying.
Pick a door lock with a credit card
Step 1: Check if your door can be bypassed using a credit card
Before you proceed with the tutorial, check first if you have a door that can be easily bypassed using a credit card. Some of the doors have deadbolts that are only retractable by using keys and lock picks. Others have slants that do not face you. There might also be barriers that would prevent you from picking the door with a card.
Step 2: Insert the card in a perpendicular position on the crack of the door.If the door can be bypassed, insert your card on the crack of the door. Make sure that the card is in a perpendicular position. You must push it enough in the crack until one edge of the card is inside.
Step 3: Slide the card upward or downward as you put pressure
Once the card is properly placed, move it upward and downward while exerting the right amount of pressure. It would be helpful if you lean the full force of your body on the door to give it a push.
In conclusion, the best item for opening a lock is the key. Locking yourself out can feel like the end of the world at the time, but there are many solutions. If none of these techniques work to open your lock, you may end up having to call a locksmith anyways.
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