Brooklyn · Licensed by NYC DCWP
Locks a copied key can't open.
Standard cylinders can be picked or copied at a hardware store counter without your knowledge. High-security cylinders use patented keyways and restricted key blanks — copies require your authorization, and the pins resist picking and drilling far better than a standard lock.
License #2135289-DCWP · valid through May 31, 2027 · Verify it yourself →
- License
- NYC DCWP #2135289-DCWP
Check the city registry
- Valid through
- May 31, 2027
Licensed by NYC DCWP
- Service area
- Brooklyn
Mobile locksmith, we come to you
- Hours
- Open 24/7
(917) 970-2894
High-security locks
What "high-security" actually means on a lock
It's not a marketing label. UL 437-rated cylinders are tested against picking, drilling, and forced entry, and use key control — a restricted keyway that means copies can only be cut with your authorization, not walked into any hardware store. We install and service Mul-T-Lock and comparable high-security lines.
This matters most for street-level doors, apartment buildings that had a break-in or a former tenant's key floating around, and businesses that need to know exactly who holds a key. For a home with average risk, a good standard deadbolt is often enough — we'll tell you honestly if you don't need to upgrade.
- UL 437-rated cylinders resistant to picking, drilling, and bumping
- Restricted keyways — copies require your authorization
- Mul-T-Lock and comparable high-security product lines
- Key control systems for buildings with staff or tenant turnover
How it works
Four steps, and no surprises in the middle
You tell us why you're upgrading. We recommend a grade that fits the actual risk, not the most expensive option. Then it's scheduled and installed like any other lock.
You tell us the situation
A break-in, a former tenant's key, or just wanting better key control. (917) 970-2894 or use the form below.
We recommend a grade, not just a price
What level of hardware actually fits your situation, and what it costs installed.
We book a time that works
Same-week in most cases, with key control paperwork explained before install day.
Installed, then tested
The technician fits the hardware, sets up key control if applicable, and tests it before calling the job done.
Questions
High-security locks: what people ask before they book
Do I actually need a high-security lock, or is a standard deadbolt enough?
For most homes with average risk, a good standard deadbolt is enough. High-security makes the most sense for street-level entries, buildings with staff or tenant turnover, or after a break-in or a lost key you can't account for. We'll give you an honest read, not the most expensive option by default.
What does "restricted keyway" mean for me day to day?
Copies of your key can only be cut by an authorized locksmith with your signature or a card system, not at any hardware store. If you hand out a key to a contractor or tenant, you control whether it gets duplicated.
Can I get high-security cylinders that fit my existing door hardware?
Often, yes — many high-security cylinders retrofit into standard deadbolt and lever housings. We'll check your specific hardware before quoting.
What brands do you install?
Mostly Mul-T-Lock, along with other UL 437-rated lines depending on the job and your budget.
Which areas do you cover?
Brooklyn. LexKey Locksmith LLC is a mobile locksmith based in Brooklyn, and we take calls across the borough.
Where we work
High-security installs across Brooklyn
A mobile locksmith comes to your door with hardware in hand. We book high-security installs across Brooklyn, and we'll tell you honestly if your address is outside a reasonable travel window.
Get help
Ready to talk through your options?
Tell us why you're considering an upgrade and we'll recommend a grade that actually fits, then quote it before scheduling. Call to get started.
Mobile locksmith · Brooklyn · Available 24/7
Call (917) 970-2894