NASTF VSP · ALOA Certified · Insured and Bonded

Duluth, GA Locksmith for Offices, Cars and Homes, Open 24/7

Card readers and keypads set up on the staff door, keys and fobs programmed beside the car, and house locks rekeyed or replaced. A mobile locksmith van comes to your Duluth address at any hour.

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Close-up of fingers working a 2-in-1 pick tool in the keyhole of a silver car door handle, a light gray sleeve behind the hand

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Business Profile · Brookhaven

15,000+ jobs completed

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Duluth, Gwinnett County

One mobile locksmith for the office door, the car and the house in Duluth

In Duluth, GA, 4Keys Locksmith is a mobile locksmith that answers 24/7, and the company holds NASTF VSP authorization, is ALOA certified, insured and bonded, and operates as 4Keys Locksmith LLC, registered with the Georgia Secretary of State. Nothing is done at a counter: the key machine, the programmers, the readers and the locks are carried in the van, which is how a locksmith who comes to you has to work. Vans set out from Brookhaven and typically reach a Duluth address in 15 to 30 minutes.

Duluth has an office side, with suites and office buildings along Peachtree Industrial Boulevard, so this page goes deepest on access control: keypads, card and fob readers, the hardware that releases the door, and how credentials are added and taken away. The car work (keys, fobs, ignitions, modules, company vehicles) and the house work follow, each with the details that shape the work and the papers or facts to have at hand.

The dispatcher prices every job over the phone, before a van is sent, from what you describe; published rates are listed on the 4Keys price page. An after-hours surcharge applies between 9 PM and 7 AM local time, and on Sundays and federal holidays, and you hear it on that same call. The line answers in English and Spanish, and 4Keys has Spanish-speaking technicians.

Commercial Locksmith, Duluth

Business locks in Duluth: who holds a key, and which door it opens

Access control has its own section below. These are the other commercial jobs, with what shapes each one.

Rekey when someone leaves

A rekey resets the pin stacks inside each cylinder, so every key cut to the old combination stops turning it while the lock body stays on the door. Before calling, walk the office and list each door the departed person could open: the entry, the suite door, the file room, the supply closet. On a master-keyed floor the new pinning has to follow the key chart or the master stops working. Where the office also uses fobs, removing the credential and rekeying the override cylinder belong in the same visit. See commercial locksmith service.

Master key systems for a suite or a building

One key for the owner, a sub-master for each department and change keys for single rooms, laid out on a key chart and pinned to it. A restricted keyway keeps those keys from being copied at a hardware counter. Bring a door list and who needs each door; the planning is walked through in how to set up a master key system.

Push bars on rear and side exits

Exit devices are installed, adjusted and repaired when the latch stops catching, and a keyed trim on the outside can let staff in through that door. How rim, vertical rod and mortise devices differ, and why each fails, is explained on the Tucker locksmith page.

Storefront and glass entry doors

Narrow-stile aluminum doors on a retail front take their own hardware: mortise cylinders, hook-bolt deadlocks and the pivots or hinges the door hangs on. Say the door is aluminum and glass so the right cylinder length and cam come on the van.

Locked out of the office after hours

Whoever runs the suite or the building and got shut out is let back in, day or night. When the key is lost rather than locked inside, the cylinder can be rekeyed before the technician leaves, so the lost key opens nothing. Say whether the building has a lobby desk or an alarm panel to disarm, so the technician is expected when the van pulls in.

Commercial lock changes and high-security cylinders

A worn lever set or a lock below what the room needs is replaced with commercial-grade hardware, and high-security cylinders with restricted keys fit a server room or a stock room. The choices are set out in the commercial lock change guide, and the statewide view is on commercial locksmith in Georgia.

Access Control, In Depth

Office access control in Duluth: keypads, card and fob readers, and the credentials behind them

An access control door trades the metal key for a credential: a PIN typed on a keypad, a card or key fob held to a reader, or, on some systems, a phone. The reader opens nothing by itself. It asks a controller whether that credential is allowed at that door at that hour, and the controller releases the lock hardware for a few seconds. That split between reader, controller and lock is what lets an office add or remove a person without touching a cylinder.

There are two broad layouts. A standalone keypad or card lock keeps its user list inside the lock and runs on batteries, which suits a single suite door or a supply room; codes and cards are added and deleted at the lock or through its software, and some models store a dated log of which user opened the door. A networked system wires each reader to a control panel that holds every user for every door, so one change reaches the whole office and one event log covers all of it.

The credential itself matters. Older proximity cards and fobs work at 125 kHz and send their number without encryption, which is why that generation can be copied with inexpensive tools. Smart credentials at 13.56 MHz, such as HID iCLASS and Seos or MIFARE DESFire, answer the reader through an encrypted challenge, so a copied number alone is refused. Cards that carry both technologies let an office change readers first and reissue cards afterward. Between reader and panel, the older Wiegand wiring sends data one way; OSDP, the open protocol maintained by the Security Industry Association, runs over two wires, supervises the line so a cut or tampered reader shows up at the panel, and supports AES-128 encryption.

At the door, the reader releases one of three things: an electric strike in the frame, an electrified lock or lever, or an electromagnetic lock on the header. Strikes and electrified locks are either fail-safe (open from outside when the power drops) or fail-secure (still locked from outside without power), and in both cases people inside leave by turning the lever or pushing the bar, because the electric part governs entry only. Magnetic locks are planned differently: the building code calls for a sensor or a marked push-to-exit switch beside the door, and for release on power loss and when the fire alarm or sprinklers activate. On a door with a push bar, an electric latch retraction kit can do the reader's work instead of a strike.

4Keys Locksmith installs keypads, card and fob readers, electric strikes and electrified locks on Duluth office doors, enrolls the first credentials, and deletes a departed employee's card, fob or code in the same visit as the rekey of any cylinder that person held a key to. A mechanical override cylinder stays on doors that need one, so a flat battery or a panel fault never shuts the owner out. When another company runs the software, your administrator switches the credential off while the technician handles the door hardware and the override cylinder.

Access Control Parts

The parts of an access control door, and how each one behaves

Terms as the Security Industry Association, card makers and door hardware references use them. The dispatcher asks which of these your door already has.

Part	Type	How it behaves	What it means for the office
Credential	125 kHz proximity card or fob	Sends a fixed number with no encryption	Can be copied with a low-cost reader; worth planning a move to smart credentials.
Credential	13.56 MHz smart card or fob (iCLASS, Seos, MIFARE DESFire)	Encrypted challenge and response with the reader	A copied card number by itself is refused.
Credential	Multi-technology card	Carries 125 kHz and 13.56 MHz on one card	Old and new readers both accept it during a changeover.
Reader wiring	Wiegand	One-way data from reader to panel	No supervision of the line; found on older installs.
Reader wiring	OSDP	Two-way, two wires, supervised, AES-128 capable	A cut line or a swapped reader is reported at the panel.
Door release	Electric strike or electrified lock, fail-secure	Stays locked from outside with no power	An outage keeps the door locked from outside; people inside still leave freely.
Door release	Electric strike or electrified lock, fail-safe	Releases from outside with no power	An outage leaves the door open from outside.
Door release	Electromagnetic lock	Holds the door closed by magnet at the header	Needs a sensor or push-to-exit release and release on power loss and fire alarm.

Sources: Security Industry Association (OSDP), HID Global (multi-technology cards), Allegion's iDigHardware references on fail-safe and fail-secure hardware and on electromagnetic lock code requirements. Exit devices on the same doors: panic bars explained on the Tucker page.

Credentials, Start to Finish

How an office door gets set up, and what happens the day someone leaves

The order an access control job in a Duluth office follows, from the phone call to the last credential switched off.

1
Count the doors and describe them
On the call, give the number of doors, whether each is wood, hollow metal or aluminum and glass, and whether any already has a reader, a keypad or power at the frame. That decides between a standalone lock and a wired reader, and it is what the quote is built from.
2
Choose the release for each door
Fail-safe or fail-secure, a strike or an electrified lock, an electric latch retraction kit on a door with a push bar, and a key override cylinder where the door needs one.
3
Install, then enroll one credential per person
The technician mounts the reader or keypad, fits the release hardware and enrolls the first cards, fobs or codes. One credential per person keeps the entry log readable: it shows who opened the door, not just that it opened.
4
Try every door from both sides
Each door is tried from inside and outside, with power and without it, so leaving the office never depends on a card.
5
The day someone leaves
Their card, fob or code is deleted, and the log can be checked for any use after their last day. If they also held a metal key to an override cylinder, that cylinder is rekeyed in the same visit.

Car Locksmith, Duluth

Car keys and fobs in Duluth, programmed where the car sits

Toyota, Honda, Nissan, Hyundai, Kia, Ford, Chevrolet, Jeep and Ram, with European and luxury makes handled through the same access. What each job involves and what to have ready.

Locked out of the car

Opening a car door is non-destructive entry work, with tools such as an inflatable wedge, a long reach rod and a Lishi decoder pick; which one depends on the lock and the door. A key visible on the seat ends the job there, and a key that fell into the trunk makes it a trunk lockout. More on car lockout service and on what to do with the keys locked inside.

A spare, or a key when none is left

A spare made while one key still works is cut and its chip programmed at the car (car key duplication). With no key left, the blade is cut from the key code and bitting on record for the VIN, and a new transponder is registered to the immobilizer; give the year on the call and the dispatcher settles which way the job goes for that year. See lost car key replacement and when every key is lost. Chip families differ by make, as the Honda and Toyota locksmith pages show. Before any programming, the technician looks at the title or registration and a photo ID, and the names on them must match.

Remotes, flip keys and push-button fobs

A remote-head key, a flip key or a proximity fob is set up beside the car, including one you ordered online whose FCC ID and part number fit the vehicle. A fob that lost its pairing but is otherwise sound is registered again; one that keeps dropping out or took on water gets swapped for a brand-new fob covered by warranty, the difference spelled out in deprogrammed versus broken fobs. Service page: smart key fob programming.

Nissan Intelligent Key: bring every fob

On Nissan push-button models, registering a new Intelligent Key erases the keys already in memory, and each key you want to keep has to be present to be registered again; the 2015 Altima owner's manual allows up to four. Put every Nissan fob you own in your pocket before the technician arrives; the dispatcher checks your model year when you call. See the Nissan locksmith page.

An ignition that sticks or spins

A key that binds, sticks halfway or spins free in the ignition points to worn wafers in the lock cylinder, a worn blade, or a failed actuator pin between cylinder and switch. The technician tells which before quoting. Start with an ignition key that refuses to turn or a key that spins; the service is ignition repair.

Snapped key in a lock or ignition

Extractor picks slide in beside the broken blade and pull it free. Keep the other half: its cuts can be decoded to cut the new blade, and the transponder in the head may be reused. Read what to do when a key snaps in the ignition; the service is broken key extraction.

A replaced module and a car that will not start

After a body control module, engine computer or immobilizer module is swapped, the car has to accept the new module and its keys together. That programming is done at the car with dealer-level software under NASTF VSP; tell the dispatcher which module was changed. See ECU and module programming; European and luxury models go through luxury key programming.

Company cars and service vans

An office that keeps pool cars or service vans can have spares and replacement fobs made for several vehicles in one trip. A VIN for each vehicle speeds it up, any documents the case needs are requested on the call, and a spare made for each car while its key still works keeps one lost key from taking a vehicle out of service. The fleet side is covered in keys for company vans and fleets.

Residential Locksmith

Duluth homes: getting in, rekeying and new locks

Houses, townhomes and condos, with what to have ready for each job.

Locked out of the house

The knob, lever or deadbolt is worked with non-destructive methods first. If the key is gone for good, the lock can be rekeyed in that visit. Late at night this runs through emergency locksmith service.

Rekey after moving in

The pins are changed so no key from the previous owner or the builder opens the door, and the doors can be keyed alike. Count every door first, the door from the garage into the house included, and any storm door with its own lock. See residential locksmith service.

Deadbolts and lock changes

A worn lock is replaced, and a door with only a knob gets a deadbolt, bored if it was never drilled and fitted with a strike in the frame. Photos of the door edge help the dispatcher.

Smart locks and keypads

Keypad and app deadbolts are installed in the existing bore where they fit, with codes set before the technician leaves. Give each person in the house a separate code, so one can be deleted without changing the rest. Keep spare batteries and the backup key somewhere you can reach from outside.

High-security locks

Restricted-keyway cylinders, with keys cut only through an authorized channel, for a front door, a home office or a detached garage.

Side doors, gates and a home office

A side entry, a gate lock or a home office door can go on the house key, or on a key of its own when fewer people should open it.

Service Area

Where in Duluth the van goes, and how to point the technician to you

4Keys Locksmith covers Duluth mailing addresses in ZIP codes 30096 and 30097. Those two ZIPs also carry Berkeley Lake and Peachtree Corners addresses, and 30097 reaches Johns Creek addresses on the Fulton County side, so a Duluth ZIP on your mail is enough: the dispatcher works from the street address.

The city runs along Buford Highway (US 23), Duluth Highway (SR 120), Sugarloaf Parkway, Pleasant Hill Road and Peachtree Industrial Boulevard, with the Chattahoochee River as its northern line. From I-85, Pleasant Hill Road is exit 104, and the SR 120 exits signed for Duluth are 105 northbound and 107 southbound; give the cross street you turned onto. The same dispatch covers Norcross to the southwest and Lawrenceville to the east.

Office buildings on Peachtree Industrial Boulevard are where the business work above happens: readers, keypads, suite rekeys and override cylinders. If your building has a lobby desk or a card-controlled garage, tell the dispatcher how the technician reaches your floor or level. For a car in the Northside Hospital Duluth lots on Howell Ferry Road, name the lot and the closest entrance. If your subdivision or complex has a gate, the technician needs a way through it: a code, the call box number, or you waiting at the entrance.

Customer Record

Reviews from 4Keys customers around Duluth

Every review below is 5 stars, published word for word. Showing 4 of 97.

4.8

97 Google reviews

13 in Spanish

Great service for my new car key for my Ford F150! I would recommend A+ for this great service here in Duluth

FordDuluth12 weeks ago

Carlos hizo un trabajo muy bueno para mi Chevrolet Silverado 2017. Gracias. Muy recomendado

David did the key for my VW Jetta. He's very professional and a good person. Thank you

Leo was greatAlexxis Gonzalez

CALL (404) 800-1658 Read every review on Google

FAQ - Duluth Locksmith Questions: Offices, Cars and Homes

Former employees with a fob, cards that can be copied, doors during a power outage, one-door systems, Nissan push-button keys, a stolen bag, ZIP codes and Spanish.

The credential goes first, since it is the quickest thing to remove: on a networked system your administrator or the technician removes it from the panel, and on a standalone lock it is deleted at the lock. Then every cylinder that person's metal key opened is rekeyed, the override cylinders included, and the entry log can be checked for any use after their last day. 4Keys Locksmith handles the rekey and the lock-side deletion in one visit.

Cards and fobs that work at 125 kHz send their number without encryption, so they can be read and copied with inexpensive tools. Smart credentials at 13.56 MHz, such as iCLASS, Seos or MIFARE DESFire, use an encrypted exchange with the reader, and a copied number alone does not open the door. Multi-technology cards let you replace the readers first and the cards afterward, so the office is never without access during the change.

People inside can still leave: with electric strikes and electrified locks, the inside lever or push bar still opens the door, because the electric part only controls entry. From outside, a fail-secure strike stays locked and a fail-safe one releases. Magnetic locks release when power is lost. A key override cylinder on the door is what lets the owner in during an outage, which is why the technician keeps one where the door needs it.

Not necessarily. A standalone, battery-operated keypad or card lock holds its own user list and can keep a log of which code or card opened the door, with no wiring to a panel. A networked system makes sense when there are several doors, several sites, or the need to manage everything from one place. Give the dispatcher the door count and material, and the quote on that call covers the layout that fits.

Yes. On Nissan Intelligent Key systems, registering a new key erases the stored keys, and each fob that should keep working has to be present to be registered again; the lost one is left out and no longer starts the car. The 2015 Altima allows up to four. Tell the dispatcher the model year on the call, and have every fob you still own at the car.

Yes. The technician starts with whatever keeps you stranded, which is the car: with the year and model given on the call, a new key is cut by code and programmed, and where the system allows it the stolen key is erased from the car. Then the office cylinders that key opened are rekeyed and any fob or card in the bag is deleted. Say on the call what was in the bag, so the van carries parts for both jobs.

Yes. ZIP 30096 is shared by Duluth, Berkeley Lake and Peachtree Corners addresses, and 30097 also carries Peachtree Corners and Johns Creek addresses. The van goes to the street address, whatever city name is on the envelope.

Yes. The same phone number answers in English and in Spanish, and 4Keys has Spanish-speaking technicians, so the lock, the car or the door can be described in whichever language is easier for you.

Duluth · Office, Car or Home

A card to shut off, a key to replace or a door to open? One call, any hour.

Tell the dispatcher the Duluth address and what needs doing. The price is set on that call, and the van then heads up I-85 from Brookhaven.