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High-Security Locks

High-security locks are built to resist picking, drilling, and unauthorized key duplication. If you've had a break-in attempt, run a business, or simply want the next level of security, this is where to start.

Call (815) 446-1440Request Service

Problems we solve

  • Keys have been copied at hardware stores without your permission.
  • You want to prevent casual duplication of office keys.
  • You've had an attempted break-in.
  • You want pick- and drill-resistant hardware.
  • You store high-value items behind a residential door.

What this service covers

High-security locks use hardened materials, more complex keying, and restricted keyways so new keys can only be cut through an authorized source. That combination protects against both physical attack and the sneakier problem of unaccounted-for copies.

Common situations

  • Front-door upgrade after a break-in attempt
  • Restricted keys for a small business
  • Rental property protection against illegal duplication
  • Executive office or private studio door

How it works

  1. 1

    Threat and use review

    We match hardware to how the door is used and what you're protecting.

  2. 2

    Estimate

    Clear pricing before any purchase or work.

  3. 3

    Installation

    New cylinders or full locks fitted and tested.

  4. 4

    Key control plan

    You get a small number of keys and a written record of who has each.

Why it matters

  • Pick- and drill-resistant construction
  • Restricted keys prevent casual duplication
  • Peace of mind after an incident

Frequently Asked Questions

Are high-security locks really different?
Yes. They use hardened components and patented keyways. That means both a harder physical attack and a much smaller chance of unauthorized copies floating around.
Can I still get spare keys later?
Yes, but only through authorized sources tied to your account. That's the point of a restricted keyway.
Do I have to replace the whole lock?
Often just the cylinder can be upgraded, if the existing lock body is a compatible design.
Is this overkill for a normal house?
Not necessarily. Even a regular home benefits from restricted keys if a lot of copies have been made over the years.

Ready to book high-security locks?

Call (815) 446-1440 or request service online. Same Day Locksmith is a mobile locksmith service. We travel to customers throughout our service area and do not operate a walk-in storefront.

Service hours: 7:00 AM – 11:00 PM, every day. Illinois Locksmith License No. 191.000919.

Call (815) 446-1440Request Service