Choosing the Right High-Security Lock: Our Medeco Options

At Fraser Lock & Safe, we take security seriously. Whether you’re protecting your home, business, rental units, or institutional facilities, choosing the correct high-security locking system is essential. We’re proud to offer the industry-leading Medeco line of security solutions across Kitchener–Waterloo and Cambridge, giving our customers trusted solutions backed by decades of real-world security performance.

Below, we break down the differences between Medeco M3, Medeco KeyMark, and the new Medeco M4—and explain why Medeco M4 is now the recommended choice for most customers looking for the highest protection.

Medeco: A Leader in High-Security Solutions

Medeco locks are known worldwide for:

• Pick resistance

• Drill resistance

• Key control (only authorized locksmiths can duplicate keys)

• Durability and performance

They are commonly used in commercial buildings, hospitals, universities, municipalities, and high-security residential applications.

Medeco M3 – Proven, Trusted, and Time-Tested

The Medeco M3 has been a cornerstone of Medeco’s high-security lineup for years. It features a unique combination of angled cuts and sidebars that make it extremely difficult to pick or manipulate.

Best For:

• Established facilities with existing Medeco systems

• Customers who need high security but don’t require the newest generation technology
  

Key Benefits:

• Strong protection against unauthorized key duplication

• Excellent physical security and lock durability
  

Consideration:

• The M3 has been largely superseded by the Medeco M4, which offers enhanced key control and resistance to evolving lock manipulation techniques.
  

Medeco X4 (KeyMark) – Secure Key Control at an Accessible Price Point

Medeco KeyMark is an excellent solution for organizations that require controlled key duplication but don’t necessarily need the full physical security enhancements found in the M3 or M4 platforms.

Best For:

• Property managers

• Multi-unit commercial buildings

• Apartment and condominium organizations

• Any environment where keys are frequently issued and tracked
  

Key Benefits:

• Strong restricted key control (keys cannot be duplicated without authorization)

• Cost-effective upgrade to standard commercial hardware

• Works in many standard lock formats and housing types
  

Consideration:

• While KeyMark protects against unauthorized key copying, it does not provide the same advanced physical security as M3 or M4.
  

Medeco M4 – The New Standard in High-Security Protection

The Medeco M4 is the newest and recommended high-security solution available today. Building on the proven M3 platform, M4 introduces a fourth locking element, adding even stronger defense against picking, bumping, and unauthorized entry.

Key Advantages:

• Enhanced key control with patented key technology protected into the 2040s

• Improved resistance against advanced lockpicking tools and forced entry

• A future-focused design that addresses new and emerging security threats
  

Ideal For:

• Businesses needing the highest level of protection

• Critical infrastructure and sensitive storage areas

• Homeowners who want true peace of mind, not just a lock off the shelf
  

In short: If you’re choosing a new high-security system today, Medeco M4 is the system we recommend.

Which Medeco System Is Right for You?

Product	Strengths	Best For	Key Control Level	Security Level
Medeco M3	Proven high-security platform	Existing Medeco installations	Strong	High
Medeco KeyMark	Affordable restricted key control	Multi-unit buildings & rental properties	Strong	Moderate
Medeco M4	Latest-generation protection with upgraded technology	Any high-security application	Highest	Highest ✅

Your Local High-Security Specialists

Fraser Lock & Safe has been serving Kitchener–Waterloo and Cambridge since 1883, providing trusted, skilled locksmithing and security expertise you can rely on.

Whether you're upgrading a single lock or securing an entire facility, we’ll help you choose the right Medeco solution for your needs.

Ready to increase your security? Call us today or visit our shop to speak with a Medeco-trained security professional.

Fraser Lock & Safe Reliable. Local. Secure.