How to Prevent Lock Picking with Security Pins

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Do you know what lock picking is? Well, it is a technique that is usually employed by burglars to gain unauthorized access to homes and other places that are kept to be secured. It often happens when standard locks are used. 


However, one of the most effective ways to enhance the security of your locks is by using security pins. In this blog post, we are going to discuss how to prevent lock picking with security pins suggested by expert Locksmith Plymouth Mn. So let’s not wait any longer and jump right into it! 

Understanding the Basics of Lock Picking

Before diving into the specifics of security pins, it’s important to understand the basics of lock picking and how traditional locks can be vulnerable. The most common type of lock used in residential and commercial settings is the pin tumbler lock.

How Pin Tumbler Locks Work

A pin tumbler lock consists of a cylindrical housing that contains a plug, which rotates to unlock the door. Inside the lock, there are several pin stacks, each consisting of a key pin and a driver pin. These pins rest in the shear line, the gap between the plug and the housing.


When the correct key is inserted, the key pins and driver pins align along the shear line, allowing the plug to rotate and unlock the door. Lock picking involves manipulating these pins to mimic the alignment created by the correct key, allowing the plug to turn without using the actual key.

Common Lock Picking Techniques


– Raking: A tool called a rake is used to quickly move the pins up and down, hoping to set them at the shear line.

– Single Pin Picking (SPP): This technique involves manipulating each pin individually until all pins are set at the shear line.

– Bumping: A specially cut key, known as a bump key, is used to jolt the pins to the shear line, allowing the lock to be opened.

Introduction to Security Pins

Security pins are specially designed pins that make lock picking significantly more challenging. They come in various shapes and configurations, each introducing different difficulties for a lock picker to overcome.

How Security Pins Work

Security pins add complexity to the internal mechanism of a lock. When a security pin is manipulated, it creates false feedback that makes it difficult for the lock picker to determine the correct position of the pins. This added difficulty can deter casual lock pickers and significantly slow down more experienced ones.

Types of Security Pins

There are several types of security pins, each offering different levels of protection. The most common types include spool pins, serrated pins, and mushroom pins.

Spool Pins

Spool pins are shaped like a spool of thread, with a narrow center and wider ends. When a spool pin is manipulated, it creates a false set, making the lock picker believe that the pin is correctly aligned when it is not.



– Effective against raking and SPP

– Widely used and available



– Can be bypassed by very skilled pickers with practice

Serrated Pins

Serrated pins have multiple small grooves cut into them. These grooves catch on the shear line as the pin is manipulated, providing false feedback to the lock picker.


– Effective against raking and SPP

– Provides multiple false sets


– Slightly more challenging to manufacture and install


Mushroom Pins

Mushroom pins are similar to spool pins but have a more pronounced shape, resembling a mushroom. This design creates even more significant false sets and is particularly challenging for lock pickers.


– Highly effective against advanced picking techniques

– Provides strong false feedback


– Can be more difficult to source and install

Enhancing Lock Security with Security Pins

Integrating security pins into your locks is a highly effective way to enhance security. Here are steps and tips on how to do this:

Assess Your Current Locks

Before upgrading to security pins, assess your current locks to determine their compatibility and condition. Older or low-quality locks may not be suitable for upgrading and might need to be replaced entirely.

Selecting the Right Security Pins

Choose the type and number of security pins based on your security needs and the value of what you’re protecting. A combination of spool, serrated, and mushroom pins can provide a comprehensive defense against various picking techniques.

Professional Installation vs. DIY

While it is possible to install security pins yourself, professional installation is recommended to ensure the pins are correctly placed and the lock functions smoothly. Professional locksmiths have the expertise and tools to optimize the security of your locks.

Regular Maintenance

Regular maintenance of your locks is crucial to ensure they continue to function properly. This includes lubricating the lock mechanism and periodically inspecting the pins for wear and tear.

Final Thoughts 

If you are serious about securing your property, you need to prevent lock picking. By incorporating security pins into your locks, you can massively increase the difficulty for potential intruders.

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