Most keyless deadbolts are safe, but there are a few things to keep in mind. First, make sure that the deadbolt is properly installed. Second, check the batteries regularly to ensure that the deadbolt is still working. Third, be sure to keep a spare key in a safe place in case of an emergency.
Yes, burglars can pick a deadbolt. However, it is much more difficult to pick a deadbolt than a regular door knob.
It's possible to kick in a deadbolt, but it's not easy. The deadbolt is designed to resist being forced open, so it's going to take a lot of force to do it. And, even if you do manage to kick the deadbolt open, the door is still going to be held shut by the doorknob. So, unless you're really strong and have a lot of practice kicking in doors, it's probably not going to work.
If you're in a bind and don't have a key, you may be able to open a deadbolt lock with a credit card. This trick works best on older locks, as newer ones often have anti-tampering features that make them more difficult to pick. To open a deadbolt with a credit card, start by inserting the card into the space between the door and the frame. Then, apply pressure to the card to bend it and slip the card between the latch and the strike plate. Once the card is in place, apply pressure to the handle to open the door
4.6/5
[Easy to Install]: Use power screwdriver and drill to mount EVERPLUS security door lock on your door frame ,finish DIY EVERPLUS door lock installation less than 5 minutes.Easy to match any inward swinging door.EVERPLUS safety door lock guard your home security as a door.
[Additional Secruity Design]:Hardened screws and 3" Stop metal construction Home security Door Lock designed to Withstand 800Ibs of force, 12times stronger than a normal deadbolt to against being kicked in. EVERPLUS secure lock make sure your home is safe.
[Home Security & Childproofing]: EVERPLUS Security Door Lock add extra security measures for toddler while you aways on business.This door reinforcement lock has a spring-loaded design to prevent child from opening the door to unknown people.
[Warranty] :Secure home by EVERPLUS, Home security door lock defend your home safe, EVERPLUS provide 5 years warranty to make sure you could buy with confidence and would try our best to solve any problem until you are satisfied.You can also purchase our two-piece set at a cheaper price. The LINK is: http://a.co/d/d0BVhdN
[Easy to Use]: Place index finger on top of EVERPLUS door lock and thumb on bottom and slide lock away from the base plate along the door in the direction of the hinges then pull outward.No tools required to open, just a little practice.Not only prevent breaking in but also easy to open in case of emergency.
$234
really simple to install, attractive, and secure. A secondary lock like this one is effective in preventing forced door entry, in my experience as a police officer trained in CEPTED and other crime prevention techniques. Additionally, this will prevent your children from sneaking out the front door and onto the street.I recommend installing. By holding it up and testing that the door does not make contact with the lock when opening and shutting, you may determine where it fits best on your door frame. Make a mark on the frame by drawing a circle around the screw plate. Use a chisel and hammer to remove the wood in that area by tapping it out with the tool very softly. Put the screw plate into the chiseled opening after that. Screw in with 3-inch screws that you must buy separately. 3 inches adds additional security. Add wood filler, sand, and paint to the surface. When finished, it will look fantastic. (Yes, the final finish still need painting and sanding.)
4.5/5
Built in Wi Fi allows you to lock/unlock from anywhere no additional accessories required. Pair with the Schlage Home app or Key app to create and manage up to 100 access codes for trusted friends and family for recurring, temporary or permanent access
Fingerprint resistant, capacitive touchscreen with easy one touch locking. Optional voice control offers hands free convenience when using voice enabled products
Easy to install with just a screwdriver. Unique Snap ‘n Stay technology snaps the deadbolt onto the door so both hands are free during installation
Built in alarm technology senses potential security breaches at the lock, while the low battery indicator offers advanced warning for battery replacement
Guaranteed to fit standard doors. Comes with limited lifetime mechanical/finish and 3 year electronics
$234
My decision to buy a Schlage Encode electronic front door lock and the corresponding FE285 handle and latch set (separate purchases) taught me a few things about how to choose these products while avoiding the majority of the issues.When the lock arrived, I had Lowes rekey it to match the other Schlage house locks I had (a free service at my Lowes). But take note: do this before installing the lock! If not, a locksmith will need to visit you and will charge you accordingly.My lock is set up and installed. If I need 911 services, it will provide me entrance to my house (I live alone). Only 911 responders will be given the temporary access code for the lock that my medical alert company owns. And if I can't delete that code right away when responders enter my home, family members or friends who have the Schlage Home app downloaded, installed, and set up on a compatible smartphone can do so for me remotely. This stops emergency personnel from later using the code fraudulently to enter the house. Additionally, the Schlage Home app can immediately alert users of any access code use, providing additional peace of mind.I had to phone Schlage's top-notch customer care to finish the lock installation and programming. The contact phone line on the Schlage website is answered by live people.Several significant factors:1. This market still lacks the appropriate balance of aesthetically pleasing and useful features. It's possible that no single model can satisfy your needs for both beauty and functionality. Encode is a relatively new model, and because the rollout does not appear to have included comprehensive installation and programming instructions, you will probably need the assistance of Schlage's friendly customer service team.2. There doesn't seem to be a matching Camelot latch set FE285 for the Encode Camelot lock. With certain other locks, these combinations are offered, along with discounts for purchasing both sets of hardware at once.3. Don't be fooled by Encode's resemblance to Schlage's other electronic locks (Sense, Touch, and Connect). Although the configuration is superficially comparable, the programming instructions for those other products do not apply to Encode, and they are also not particularly clear. On Schlage's website, it's difficult to get programming instructions for the Encode. Encode doesn't even show up as a selection option for programming instructions in the Schlage Home app's FAQs section.4. To my knowledge, the only Schlage model that can connect to your WiFi network without the aid of an external hub or WiFi adapter is Encode. That is why I bought it. Advantage: Less chance of a bad wifi connection and device. WiFi transceivers have the drawback of using a lot of power, which reduces battery life. The free Schlage Home app or any suitable app must be downloaded and installed on a compatible mobile device before you can set up the WiFi connection. Only then can you use the app to establish the connection.5. There are not enough instructions. My normal door cutouts for the latch and lock were identical to the template that was included, but neither the latch nor the lock was centered where it should have been. To create place for their installation, I had to clear material out of these holes on the sides closest to the door's edge. This is true even though the Encode took the place of the manual latch set and lock from Schlage on the same door. The Quick Start Guide's largest omission is that WiFi isn't even acknowledged, much less explained.6. I find the Schlage Home app's user interface to be overly simplistic.7. There are only a few finishes accessible for Encode. For instance, my house's Schlage interior hardware could not be matched with an old brass finish. I chose the Camelot model with the Aged Bronze finish in the hopes of finding a match. This was a bad choice. Aged Bronze is so black that it is impossible to determine from a short distance whether the lock is engaged or not, in addition to being significantly redder than the yellowish Antique Brass. It simply doesn't reflect enough light to see any detail, like a black hole. If I were to choose again, I would choose one of the cutting-edge Encode Century designs with obvious features. They are just as good as, if not better than, the alternative I choose for my decor.8. I still don't get along with the Encode keypad. This keypad's sensitivity appears to change from one key press to the next, similar to keypads on mobile phones. There is no indication of where one is in the process when inputting, for example, the six-digit programming code required for adding or deleting user codes. There won't be any indication that you unintentionally touched the same key twice quickly, for instance. You're likely to struggle in these circumstances before starting afresh (expletives deleted). A number won't answer unless the exact center is pressed. When the keypad is near your navel and it is chilly outside or pouring rain, it is easier said than done. I greatly like a mechanical computer keyboard-style push-button keypad that provides tactile feedback everytime a key is successfully depressed. Push buttons are available on several other Schlage models, although such devices can't directly connect to WiFi networks.9. Some electronic locks require the user to manually flip the deadbolt after accepting an entry code. The deadbolt is automatically moved by Encode without your intervention. Slick. But it comes at a price. If your door is not positioned precisely and correctly, the deadbolt will bump up against the strike and not move far enough to fully engage the lock. In addition to lowering battery life and potentially harming the tiny bolt motor, this decreases security and increases the likelihood that a deadbolt will draw more power if it rubs against the striking plate. In the ideal scenario, every door is always in the ideal location. In actuality, due to material expansion, contraction, warping, and movement of the house, even doors that are initially precisely positioned are highly likely to slip and rub with time. Because of this, I favor deadbolt operation that is mechanical. However, Schlage versions with that capability cannot directly connect to WiFi.There you have it, then. Consider your options carefully when it comes to locks, then pick the one that best suits your needs.
4.5/5
WORKS WITH ALEXA. Check the status of your lock and lock / unlock your door. In addition, Alexa will let you know when your battery is running low, or you can set-up smart reorders through Amazon Dash Replenishment so you always have replacement batteries when needed.
Built in alarm technology senses potential security breaches at the lock, while the low battery indicator offers advanced warning for battery replacement
Easy to install with just a screwdriver. Unique Snap ‘n Stay technology snaps the deadbolt onto the door so both hands are free during installation. Door thickness range 1 3/8 inch (35 millimeter) to 1 3/4 inch (45 millimeter). Backset Universal Backset Adjusts to 2 3/8 inch (60 millimeter) or 2 3/4 inch (70 millimeter)
Fingerprint resistant, capacitive touchscreen with easy one touch locking. Optional voice control offers hands free convenience when using voice enabled products
Guaranteed to fit standard doors. Comes with limited lifetime mechanical/finish and 3 year electronics
Built in Wi Fi allows you to lock/unlock from anywhere no additional accessories required. Pair with the Schlage Home app or Key app to create and manage up to 100 access codes for trusted friends and family for recurring, temporary or permanent access
$234
My decision to buy a Schlage Encode electronic front door lock and the corresponding FE285 handle and latch set (separate purchases) taught me a few things about how to choose these products while avoiding the majority of the issues.When the lock arrived, I had Lowes rekey it to match the other Schlage house locks I had (a free service at my Lowes). But take note: do this before installing the lock! If not, a locksmith will need to visit you and will charge you accordingly.My lock is set up and installed. If I need 911 services, it will provide me entrance to my house (I live alone). Only 911 responders will be given the temporary access code for the lock that my medical alert company owns. And if I can't delete that code right away when responders enter my home, family members or friends who have the Schlage Home app downloaded, installed, and set up on a compatible smartphone can do so for me remotely. This stops emergency personnel from later using the code fraudulently to enter the house. Additionally, the Schlage Home app can immediately alert users of any access code use, providing additional peace of mind.I had to phone Schlage's top-notch customer care to finish the lock installation and programming. The contact phone line on the Schlage website is answered by live people.Several significant factors:1. This market still lacks the appropriate balance of aesthetically pleasing and useful features. It's possible that no single model can satisfy your needs for both beauty and functionality. Encode is a relatively new model, and because the rollout does not appear to have included comprehensive installation and programming instructions, you will probably need the assistance of Schlage's friendly customer service team.2. There doesn't seem to be a matching Camelot latch set FE285 for the Encode Camelot lock. With certain other locks, these combinations are offered, along with discounts for purchasing both sets of hardware at once.3. Don't be fooled by Encode's resemblance to Schlage's other electronic locks (Sense, Touch, and Connect). Although the configuration is superficially comparable, the programming instructions for those other products do not apply to Encode, and they are also not particularly clear. On Schlage's website, it's difficult to get programming instructions for the Encode. Encode doesn't even show up as a selection option for programming instructions in the Schlage Home app's FAQs section.4. To my knowledge, the only Schlage model that can connect to your WiFi network without the aid of an external hub or WiFi adapter is Encode. That is why I bought it. Advantage: Less chance of a bad wifi connection and device. WiFi transceivers have the drawback of using a lot of power, which reduces battery life. The free Schlage Home app or any suitable app must be downloaded and installed on a compatible mobile device before you can set up the WiFi connection. Only then can you use the app to establish the connection.5. There are not enough instructions. My normal door cutouts for the latch and lock were identical to the template that was included, but neither the latch nor the lock was centered where it should have been. To create place for their installation, I had to clear material out of these holes on the sides closest to the door's edge. This is true even though the Encode took the place of the manual latch set and lock from Schlage on the same door. The Quick Start Guide's largest omission is that WiFi isn't even acknowledged, much less explained.6. I find the Schlage Home app's user interface to be overly simplistic.7. There are only a few finishes accessible for Encode. For instance, my house's Schlage interior hardware could not be matched with an old brass finish. I chose the Camelot model with the Aged Bronze finish in the hopes of finding a match. This was a bad choice. Aged Bronze is so black that it is impossible to determine from a short distance whether the lock is engaged or not, in addition to being significantly redder than the yellowish Antique Brass. It simply doesn't reflect enough light to see any detail, like a black hole. If I were to choose again, I would choose one of the cutting-edge Encode Century designs with obvious features. They are just as good as, if not better than, the alternative I choose for my decor.8. I still don't get along with the Encode keypad. This keypad's sensitivity appears to change from one key press to the next, similar to keypads on mobile phones. There is no indication of where one is in the process when inputting, for example, the six-digit programming code required for adding or deleting user codes. There won't be any indication that you unintentionally touched the same key twice quickly, for instance. You're likely to struggle in these circumstances before starting afresh (expletives deleted). A number won't answer unless the exact center is pressed. When the keypad is near your navel and it is chilly outside or pouring rain, it is easier said than done. I greatly like a mechanical computer keyboard-style push-button keypad that provides tactile feedback everytime a key is successfully depressed. Push buttons are available on several other Schlage models, although such devices can't directly connect to WiFi networks.9. Some electronic locks require the user to manually flip the deadbolt after accepting an entry code. The deadbolt is automatically moved by Encode without your intervention. Slick. But it comes at a price. If your door is not positioned precisely and correctly, the deadbolt will bump up against the strike and not move far enough to fully engage the lock. In addition to lowering battery life and potentially harming the tiny bolt motor, this decreases security and increases the likelihood that a deadbolt will draw more power if it rubs against the striking plate. In the ideal scenario, every door is always in the ideal location. In actuality, due to material expansion, contraction, warping, and movement of the house, even doors that are initially perfectly positioned are very likely to shift and rub over time. Because of this, I favor deadbolt operation that is mechanical. However, Schlage models with that feature cannot directly connect to WiFi.There you have it, then. Consider your options carefully when it comes to locks, then pick the one that best suits your needs.
4.3/5
Includes latch with adjustable backset 2 to 3/8 inches to 2 to 3/4 inches to fit all standard door preparations
Designer style and superior security with this Kwikset Signature Series product; SmartKey Security re key technology is compatible with Kwikset (KW1) keyway
Featuring SmartKey Security, which protects against advanced break-in techniques and allows you to re key your lock yourself in seconds
Customized automatic door locking after 30 seconds for peace of mind and keypad stays lit for 5 seconds after inactivity
Note: Please refer the installation manual below for better use
ANSI/BHMA grade 3 certified
Comes with a lifetime mechanical and finish warranty and a one year electronics warranty
$234
I presently have a Wink 2 hub, along with Nest, Z-Wave switches, a My Q garage door, and a Z-Wave deadbolt for the front door was the next item on the list. I wanted a Z-Wave deadbolt with an external keypad rather than simply a conventional deadbolt so I could configure it for our dog sitter, my mother-in-law, and neighbors when they watch my house and/or dogs. I therefore examined every Kwikset Z-Wave lock and made up my mind to purchase the touchscreen model, but after reading additional reviews and experimenting with it at a nearby hardware store, I changed my mind and preferred the physical buttons. Thus, I go with this model.Despite reading reviews concerning a lengthy installation process and issues connecting with home automation hubs, I got the door installed and was able to lock and unlock the door with my phone using the Wink app in less than 15 minutes. I felt VERY happy. Later that evening, it took me an extra five minutes to re-key it to my current Kwikset Tustin locks.Looking to get a second one for both our back door and the garage door. I'm really happy with the purchase.
4.2/5
Works with Alexa for voice control (Alexa device sold separately) ; Requires 110 to 240 Volts
Be sure you’re secure with Door Sense. Only August has Door Sense to tell you if your door is securely closed and locked
Locks automatically behind you, and unlocks as you approach. Retrofit installation works with most standard single cylinder deadbolts
Keep your existing lock and keys. Easily attaches to your existing deadbolt; use your existing keys at anytime
Control and monitor your door from anywhere. Lock and unlock your door, control keyless access and keep track of who comes and goes, all from your phone
Simple, DIY installation. Install in about 10 minutes with just a screwdriver
Always know who is coming and going. Track activity at your doorstep with a 24/7 Activity Feed and requires iOS (9.0 or higher) or Android (5.0 or higher) smartphones
$234
I presently have a Wink 2 hub, along with Nest, Z-Wave switches, a My Q garage door, and a Z-Wave deadbolt for the front door was the next item on the list. I wanted a Z-Wave deadbolt with an external keypad rather than simply a conventional deadbolt so I could configure it for our dog sitter, my mother-in-law, and neighbors when they watch my house and/or dogs. I therefore examined every Kwikset Z-Wave lock and made up my mind to purchase the touchscreen model, but after reading additional reviews and experimenting with it at a nearby hardware store, I changed my mind and preferred the physical buttons. Thus, I go with this model.Despite reading reviews concerning a lengthy installation process and issues connecting with home automation hubs, I got the door installed and was able to lock and unlock the door with my phone using the Wink app in less than 15 minutes. I felt VERY happy. Later that evening, it took me an extra five minutes to re-key it to my current Kwikset Tustin locks.Looking to get a second one for both our back door and the garage door. I'm really happy with the purchase.
4/5
Perfect for guests and your kids, no smartphone needed. Requires iOS (9.0 or higher) or Android (5.0 or higher) smartphones
Create unique codes instantly from your smartphone anytime. Mounts outside and works with any August Smart Lock
Accessory for the August Smart Lock
House cleaners, dog walkers, and other service providers can securely come and go using a temporary PIN.
Secure, code-based home entry
Locks door with the simple push of a button.
$234
I presently have a Wink 2 hub, along with Nest, Z-Wave switches, a My Q garage door, and a Z-Wave deadbolt for the front door was the next item on the list. I wanted a Z-Wave deadbolt with an external keypad rather than simply a conventional deadbolt so I could configure it for our dog sitter, my mother-in-law, and neighbors when they watch my house and/or dogs. I therefore examined every Kwikset Z-Wave lock and made up my mind to purchase the touchscreen model, but after reading additional reviews and experimenting with it at a nearby hardware store, I changed my mind and preferred the physical buttons. Thus, I go with this model.Despite reading reviews concerning a lengthy installation process and issues connecting with home automation hubs, I got the door installed and was able to lock and unlock the door with my phone using the Wink app in less than 15 minutes. I felt VERY happy. Later that evening, it took me an extra five minutes to re-key it to my current Kwikset Tustin locks.Looking to get a second one for both our back door and the garage door. I'm really happy with the purchase.
3.6/5
World's First 5-in-1 Keyless Entry Smart Lock, Fingerprint + Code + Smartphone + Knock to Open + Key
Advanced Fingerprint Identification, Anti-peep Touch Keypad Technology, View Logs via Ultraloq App; Temperature: Inside lock body: 14°F (-10°C) to 131°F (55°C)
Single Latch (Optional Deadbolt Cover Plate Required for Replacing Existing Deadbolt).Projection:0.6 inches
Reversible Handle, Weatherproof, Intuitive OLED Display, Long Battery Life, Low Battery Alarm
18 Months Electronic and Lifetime Mechanical Warranty, DIY Installation, Auto-relock/Passage/Lockout
$234
In December, I bought this for my apartment complex. Firstly, although I have been a renter of the building for a long time, I do not own it. It is a seven-unit structure with three front doors. The (absent) owner's business is managed by the property manager who resides in the building. In San Francisco, where we reside, package theft for items left on the front porch has been a problem. I proposed to buy locks for all three of the exterior doors if the property management handled the installation (and any flak from the owner). It was a cost I was ready to incur because I intend to stay in the building for a very long time.Here are my impressions and those of my fellow tenants after that:Two stars for setup ease. On the surface, setting up the Utraloqs appears to be straightforward and you can copy the configuration from one lock to another with relative ease. However, creating entries for many users can be a hassle. The property manager and I were to be administrators in our setup. I'm more than passingly familiar with solid security procedures (technical and otherwise) in my professional life, and I also created separate user accounts for the two of us (which was good, because the property manager quickly forgot the administrator account that I had set up but had no problem remembering the user account). But because the keypad is just numeric and is used to create all new accounts, I had to give a number to each intended user for each unit in the building. Since the biometric only records one finger for each user account, I had to designate one for each tenant rather than per flat. Then I understood that some of us, including myself, wanted to record a finger from each hand to make it easier to use when holding a package, which required me to create two user accounts for each individual who wanted to record two fingers. While adding people without an app is convenient, using the keypad is definitely annoying from a user interface standpoint. It should be noted that you may add a name to a user via the Ultraloq App, but more on that later.Installation was handled by a skilled locksmith, not me. He said that it went smoothly and inquired about the locks because he might start suggesting them to others.Score of five for battery life. They have been continuously used for four months without any problems. I have no problems utilizing AA batteries that are rechargeable from AmazonBasics.Keypad Usage: 4.5 out of 5. The keypad does not wake up (and remains dark) until you need it. You enter your code and press the enter key, a symbol (to understand what I mean, look at the image of the keypad). To be fair, there is no indication that you need to press enter, but aside from that one person, everyone else, including delivery people and cleaning services, found out how to operate the keypad on their own.Biometric usage: 4.5 out of 5. When the reader gets it right the first time, it is incredibly fast and wakes up very quickly. Your results will, however, vary depending on where you place your finger (relative to when you first recorded it), the weather (if it is cold or very dry, the reader may have more difficulty than during warmer weather), the reader's cleanliness (obviously, if it is smudged with mud, it won't work so well), and the state of your preferred finger. One method to help the reader pick up your whorls and ridges when it's chilly outside or your skin is dry is to touch the surface of your finger to your forehead and then touch the reader.Bluetooth usage: NR. We don't actually utilize this, either. Although I have tested it and it functions as intended, a rating cannot be given based on a single test use.Manual Usage Key: NR. The keys are available just in case of an emergency; they shouldn't be used frequently to access locks. They sound fragile, despite what the business and our locksmith both claim.App Ultraloq: 2.5 out of 5. There is an app. You can see the locks there. The majority of the time, opening them works. It struggles to keep a connection when carrying out administrative maintenance. The majority of the administrative tasks cannot be transferred from the lock to the app. It *does* preserve a security log of who has used the lock successfully and who has attempted to use it unsuccessfully, as well as administrator logins; however, it is challenging to maintain a connection long enough to download the log. Although it keeps a basic track of the battery's status, I've found this to be incredibly unreliable.I'm currently waiting for the bridges to be made available so that these locks may be used more effectively. Theoretically, this will enable me to more easily manage the building's locks and restrict the use of specific codes to specific days and hours (for example, delivery trucks). Three of the bridges were acquired by me, but Ultraloq has not yet made them available.Despite the fact that I didn't immediately give everything five stars and declare the locks to be fantastic, these locks are still rather good for the price. They perform around 75% of the tasks we require of them, and 90% of the time they do it flawlessly. No tenant has voiced dissatisfaction with the move; on the contrary, practically everyone in the building has expressed gratitude for my decision to buy them for the building. I don't mind that the property manager has given me the duty of keeping the user database up to date till it's a little simpler. With the noteworthy exception of Amazon Logistics (who keeps leaving shipments on the porch without even attempting the code, but we are working on this) and OnTrac, the majority of the delivery firms have no issues using the codes we have provided them (although we may have them onboard now). I wouldn't hesitate to award this five stars if the smartphone interface's functionality, the simplicity of adding, deleting, and changing users, or the improved capabilities of the upcoming bridges were taken into consideration. This system isn't ideal right now, but I do suggest it.
Yes, you can put a deadbolt on any door. Deadbolts are one of the most common types of locks, and are often used on front doors.
If you have a deadbolt, you may not need a knob lock. However, it depends on the type of deadbolt you have. If you have a single cylinder deadbolt, you will need a knob lock. If you have a double cylinder deadbolt, you will not need a knob lock.
There are a few things you can do to help protect your home without a security system. You can keep your doors and windows locked, even when you’re home. You can also get to know your neighbors and let them know when you’ll be out of town. If you have a dog, they can also be a great deterrent. You can also install motion-sensor lights around your home.
There are a few things you can do to burglar proof your front door. One is to install a deadbolt lock. This is a type of lock that is very difficult to pick. Another is to install a strike plate. This is a metal plate that goes over the hole in the door frame where the lock bolt goes. This makes it very difficult to kick the door in. Finally, you can install a peephole in the door. This allows you to see who is outside before you open the door.
The easiest way to open a deadbolt without a key is to use a bump key. A bump key is a key that has been filed down so that it can fit into any lock. To use a bump key, insert it into the lock and turn it back and forth until the lock opens.
A deadbolt, also known as a deadlock, is a locking mechanism distinct from a spring bolt lock because a deadbolt cannot be moved to the open position except by rotating the key. A deadbolt lock is often used on exterior doors of homes and businesses to provide an extra measure of security. A deadbolt can make it more difficult for a burglar to break in, as compared to a spring bolt lock.
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