Unlocking the Secrets: How to Open a Door Lock with the Key Inside?

Have you ever found yourself locked out of your home, staring through the window at your keys lying just beyond your reach? It’s a frustrating and all-too-common scenario. In this article, we’ll delve into the world of locksmithing and explore the art of opening a door lock with the key inside. We’ll also touch on other essential topics, such as how to remove a lock on a door, open cabinet locks without a key, and what the best smart door lock to buy is. So, buckle up, and let’s unravel these secrets together.

How to Open a Door Lock with the Key Inside?

Getting locked out of your own home can be quite distressing. But fear not! There are a few techniques you can employ to get back inside when your key is taunting you from the other side of the door.

The Credit Card Trick

One classic method is the credit card trick. Here’s how it works:

  1. Take an old or expired credit card.
  2. Slide it between the door and the frame, just above the lock.
  3. Wiggle and push the card downward while simultaneously turning the doorknob.
  4. With some patience and luck, the latch may retract, allowing you to open the door.

This technique may not work on all doors, especially those with more advanced locks, but it’s worth a shot in a pinch.

Picking the Lock

If you have a little more time and patience, you can attempt to pick the lock. You’ll need a few basic lock-picking tools, which can be purchased online or from your local locksmith.

  1. Insert the tension wrench into the bottom of the keyhole, applying slight pressure to the lock’s core.
  2. Insert a lock pick tool into the top of the keyhole.
  3. Gently move the pick tool back and forth while maintaining tension with the wrench.
  4. If done correctly, you’ll feel the pins inside the lock align, allowing you to turn the lock and open the door.

Lock picking requires practice and skill, so be prepared to invest some time into mastering this technique.

Seeking Professional Help

In some cases, it’s best to leave the task to the professionals. A locksmith has the expertise and tools to open your door without damaging the lock or the door itself. While this option may be a bit more costly, it’s a reliable solution for those who prefer to avoid DIY methods.

How to Remove a Lock on a Door?

If you’ve ever wanted to replace your door lock or simply remove it temporarily, here’s how you can go about it:

Gather Your Tools

Before you start, make sure you have the following tools at hand:

  • Screwdriver
  • Pliers
  • Hammer

Removing a Deadbolt Lock

  1. Begin by removing the screws on the interior side of the door.
  2. Once the screws are out, the lock mechanism should come apart.
  3. Carefully detach the lock from the door.

Removing a Doorknob Lock

  1. Start by removing the screws on the inside of the doorknob.
  2. Gently pull the doorknob away from the door, exposing the lock mechanism.
  3. Remove any remaining screws or components to fully detach the lock.


When you’re ready to reassemble the door lock, follow the manufacturer’s instructions for your specific lock type. Ensure that all components are secured in place.

How to Open a Cabinet Lock Without a Key?

Cabinet locks can also be tricky when you find yourself without a key. Let’s explore a simple method to open them:

Paperclip Method

You can use a paper clip to open a cabinet lock. Here’s how:

  1. Unfold a paperclip and bend it into an L shape.
  2. Insert the shorter end into the lock’s keyhole.
  3. Apply gentle pressure and wiggle the paperclip while turning it as if it were a key.

With a bit of patience and finesse, the cabinet lock should pop open, granting you access to your belongings.

What Is the Best Smart Door Lock to Buy?

In this age of technology, smart door locks are becoming increasingly popular. They offer enhanced security and convenience. When shopping for a smart door lock, consider the following factors:

  • Compatibility: Ensure the lock is compatible with your smartphone or smart home system.
  • Security Features: Look for locks with advanced security features like fingerprint recognition, passcodes, and remote access control.
  • Installation: Check if you can install it yourself or if professional installation is required.
  • Price Range: Determine your budget and find a smart lock that fits within it.

Popular smart door lock brands include August, Schlage, and Yale. Do your research to find the best fit for your needs.


Can I use any credit card for the credit card trick?

You can use an old or expired credit card for the credit card trick. Keep in mind that this method may not work on all doors, especially those with more advanced locks.

Lock-picking is legal in many places when done by the property owner or with permission. However, it can be illegal if used for malicious purposes or without proper authorization.

Are smart door locks safe?

Smart door locks offer advanced security features, but like any technology, they may have vulnerabilities. It’s essential to choose a reputable brand and keep your smart lock updated to ensure its security.


Getting locked out of your home can be a frustrating experience, but with the right knowledge and tools, you can overcome this challenge. Whether it’s using the credit card trick, lock picking, or seeking professional help, there are solutions to opening a door lock with the key inside. Additionally, we’ve covered how to remove a lock on a door and how to open a cabinet lock without a key.

If you’re looking to enhance your home security, consider investing in a smart door lock. Just make sure to choose one that fits your needs and budget. Now, armed with these tips, you’re better prepared for any lock-related challenges that come your way. So, go forth and unlock the mysteries of the locked door with confidence.