The Complete Guide to Rekeying Locks: Enhancing Security Without Replacing Hardware

Rekeying locks is a practical, cost-effective solution for maintaining security while avoiding the expense of full lock replacements. This process involves altering a lock’s internal mechanism to render old keys useless, ensuring only new keys can operate the system. Below, we explore everything you need to know about rekeying, including its history, benefits, and applications.

What Is Rekeying?

Rekeying modifies a lock’s internal components—typically the pins or tumblers—so it works with a new key. The existing hardware remains intact, making it ideal for homeowners, landlords, or businesses seeking to update security without replacing entire locks.

A Brief History of Rekeying

The concept dates back to 1836, when Solomon Andrews, a New Jersey locksmith, invented adjustable tumblers and keys. His design allowed locks to be reconfigured at any time. By the 1850s, Andrews and Newell patented removable tumblers, paving the way for modern combination locks and master-key systems.

Call Us Now to Get a Quote.

Locksmith Toronto | Maple Leaf Locksmith | master key rekeying

Why Choose Rekeying?

  1. Enhanced Security
    • Eliminate compromised keys after losing them, moving into a new property, or suspecting unauthorized access.
    • Customize pin configurations to create unique, harder-to-pick locks.
  2. Cost Savings
    • Up to 70% cheaper than replacing locks, especially for properties with multiple entry points.
  3. Convenience
    • Standardize all locks to work with a single key, simplifying access for homes or businesses.
    • Quick process (10–15 minutes per lock) with minimal disruption.
  4. Master Key Systems
    • Create hierarchical access control (e.g., property managers can use a master key while tenants have individual keys).
  5. Sustainability
    • Reuse existing hardware, reducing waste from discarded locks.

Modern Rekeying Technologies

1. SmartKey Technology

  • Developed by brands like Kwikset and Weiser, SmartKey allows locks to be reprogrammed in seconds using a specialized tool. Unlike traditional methods requiring disassembly, this system realigns internal wafers to accept new keys, making it ideal for landlords, businesses, or homeowners needing rapid updates.

2. Biometric Integration

  • Modern locks like Weiser’s SmartScan (2007) combine rekeying with fingerprint recognition, enabling keyless entry while retaining the option to reprogram physical keys. This hybrid approach caters to both convenience and heightened security demands.

3. Cryptographic Rekeying

  • In digital security, RFC 8645 standards define external and internal rekeying for symmetric keys:
    • External: Generates new keys periodically without altering encryption modes.
    • Internal: Updates keys during data processing, ideal for long-term sessions.
      These methods prevent key exhaustion in IT systems, showcasing rekeying’s relevance beyond physical locks.

Why Choose Rekeying?

Choose Rekeying If:

  • Your locks are functional but need updated security.
  • You want to unify multiple locks under one key.
  • Lost keys pose a security risk.

Replace Locks If:

  • Your locks are functional but need updated security.
  • You want to unify multiple locks under one key.
  • Lost keys pose a security risk.

Commercial Rekeying Strategies

Businesses benefit from tailored rekeying solutions:

  • Cost Efficiency: Rekeying 10+ locks costs 60% less than replacements, critical for multi-entry properties.
  • Downtime Reduction: Offices or retail spaces can update security during off-hours, avoiding operational disruptions.
  • Master-Key Hierarchies: Custom tiers grant access to managers, employees, or contractors while revoking lost keys instantly.

Why Trust Professional Locksmith Services?

While DIY kits exist, rekeying requires expertise to avoid misaligning pins or damaging locks. Our certified technicians provide:

  • Speed and Precision: Rekey multiple locks in a single visit.
  • Custom Solutions: Tailor master-key systems or high-security pin configurations.
  • Guaranteed Security: Verify that old keys are fully deactivated.

Final Thoughts

Rekeying is a smart choice for balancing security, cost, and convenience. Whether you’re a homeowner, landlord, or business owner, this service offers peace of mind without the hassle of hardware replacements. For personalized advice or to schedule a rekeying service, contact our team today—we’re here to help you secure what matters most.