Smart locks won't necessarily make your home any safer, but they will allow for more control -- so that you can lock and unlock your door remotely (whether you're home or away) and even extend "digital keys" to friends, family, caregivers and anyone else you regularly admit into your home.
Sure, you can still use a regular ol' key to open a smart-lock-equipped door (or most of them, anyhow), but don't be too quick to discount the convenience of connectivity -- especially when your hands are full of grocery bags, a stroller or anything else that makes it tough to rummage around for your keys. And when you crawl into bed, wondering if you remembered to lock the door, you won't need to throw a bathrobe on and stumble out to the front door -- you can just check the lock status -- and lock it -- all via your phone while tucked safely under th covers.
That said, not all smart locks are the same. There are keyless options, Bluetooth options, locks that fit on your deadbolt and complete replacement locks. It can be tricky to navigate if you're new to smart home tech. Here's a look at today's smart lock options, what you need to know before buying one, and how to choose the right lock for your home.
Models like the August Smart Lock, Kwikset Kevo Convert and Sesame Smart Lock are designed specifically to clamp in place over top of your existing deadbolt hardware. All three work with a lot of standard deadbolt brands and are priced around $150. In August's case, the compatibility ranges from Arrow Hardware and Baldwin to Defiant, Kwikset, Schlage and many more. (Here's August's and Kwikset's deadlock compatibility charts for more details.)
The August Smart Lock clamps over your existing deadbolt and can turn it automatically whenever you want it to.
With these retrofit setups, you get to keep the hardware already defending your door and add a layer of connectivity over top of it. This also means you get to keep your physical keys. Retrofit smart locks are the simplest way to add connectivity to your door without replacing your entire deadbolt system.
The other option is to replace your existing deadbolt altogether. The majority of smart locks take this approach, including the Schlage Sense Bluetooth Deadbolt, the Kwikset Kevo and the Yale Assure SL Touchscreen Deadbolt.
Locks like these will take a little more time and effort to install, but it's definitely doable for a novice DIYer. Since most locks are entire deadbolt replacements, you're going to have significantly more options if you go this route. Similar to the retrofit versions, you just need a screwdriver and about 20 minutes. Just remember to make sure that your door is smart-lock compatible before buying in. Another tip: Snap a picture of your existing setup before you begin, to ensure that you can reverse the install if you run into any unexpected issues with the new smart lock. A new deadbolt might also mean a new set of keys (unless you choose a keyless model), so everyone in your family who wants a physical key will need a copy of the new one.
A smart lock needs to be able to communicate with the rest of your smart home setup and with your phone. Most will do that using one of three common communication protocols: Bluetooth, Z-Wave or Wi-Fi.
There are pros and cons to each, so you'll want to be sure to understand the differences before making a purchase.
Bluetooth is a common smart-lock protocol because it doesn't burn through battery life as quickly as Wi-Fi does. After all, it's not like you can plug your deadbolt in, and who wants to change the batteries on a door lock every month? With Bluetooth, your lock's batteries should last a year or longer.
The downside to Bluetooth is that your range is somewhat limited -- roughly 300 feet in a best-case scenario, and probably a lot less than that depending on how your home is laid out. It's enough to control your lock while you're at home, but wander too far afield and you'll lose the connection.
Something else to keep in mind is that Bluetooth locks will connect directly with your phone or tablet. You don't need any sort of hub device to act as translator, since your phone already speaks the language. That's convenient if your smart-home aspirations end at your lock, but hubs grant you the ability to control multiple connected devices from a single app, which can be more convenient than dividing home control among an assortment of device-specific apps.
There are still some neat integrations available with Bluetooth-only smart locks, though. For instance, the August lock has an opt-in auto-unlock feature that's tied to your phone's Bluetooth. Lock your front door, leave home, then return within Bluetooth range, and your front deadbolt will automatically unlock. If you want to control your lock remotely, adding passcodes or letting people in while you're away, you're going to need a Z-Wave hub or Wi-Fi-connected smart lock.
Z-Wave smart locks are available from brands like Schlage, Poly-Control and others. Unlike Bluetooth locks, Z-Wave locks don't connect directly with your phone. Instead, they'll need to connect to a Z-Wave-compatible hub. That hub will translate the lock's Z-Wave signal into something your router can understand -- once it does, you'll be able to connect with your lock from anywhere.
The Wink Hub can translate a Z-Wave smart lock's transmissions into something your router can understand.
Samsung's SmartThings and the Wink Hub are two examples of Z-Wave control hubs. SmartThings in particular works with a bunch of third-party Z-Wave locks, from Kwikset and Poly-Control to Schlage and Yale. (Here are the complete lists of SmartThings- and Wink-compatible locks.)
The range of a Z-Wave connection is about 120 feet, so the lock will need to be at least that close to the hub -- though additional Z-Wave devices can act as a range extenders by repeating the signal from the hub and sending it out further. The Z-Wave signal can bounce up to four different times, for a maximum range of about 600 feet (walls, doors and other obstructions will all take a toll on range).
Some Z-Wave locks like the Schlage Camelot Touchscreen Deadbolt ($216 at Walmart) don't offer their own app -- instead the interface for the lock will pop up in the app of whatever Z-Wave hub you use. This can either leave you feeling disappointed that you don't have detailed, dedicated settings for your lock, or happy to not be downloading yet another app with yet another log-in. Again, it's all about preference here.
Z-Wave's biggest setback is the requirement of an additional hub to talk to Wi-Fi. The plus side is that you can connect to more third-party devices than a standard Bluetooth lock -- if you have SmartThings or another multiprotocol hub. But, if you don't plan to use a bunch of other devices with your lock, Z-Wave may not be right for you.
The Kwikset Kevo Plus translates your lock's Bluetooth signal into a Wi-Fi signal you can access from anywhere.
Wi-Fi is available as an optional add-on with select models. For August's line of locks, a $79 August Connect plugs into a power outlet and bridges the connection between the Bluetooth August lock and your home Wi-Fi network. The same goes for the $100 Kwikset Kevo Plus. Once you've plugged in these accessory devices and made that connection, you can control your lock from anywhere with an Internet connection.
While this doesn't require a clunky router-connected hub, the Connect is yet another hunk of hardware that you wouldn't otherwise have to deal with or pay for. Still, it could add significant value to a once-Bluetooth-only product, depending on your need for remote lock access.
Related to all of this protocol-talk is the question of interoperability with products from other manufacturers.
With the Z-Wave locks that work over "universal" hubs like SmartThings and Wink, this functionality is built in. That means other smart gadgets that are compatible with your Z-Wave hub should have some level of integration with your smart lock. Want to set up a rule that turns on your ZigBee-powered Philips Hue LEDs whenever you unlock your Z-Wave lock? That's a reasonable option when you have a hub that speaks both ZigBee and Z-Wave. There are even more possibilities with locks that have IFTTT (If This Then That) services. Read up on smart home IFTTT recipes here.
In addition, products like the Schlage Sense Bluetooth Deadbolt ($235 at Walmart), the Kwikset Premis, and the second-gen August Smart Lock work with Apple's HomeKit, Apple's own network of smart home devices that harnesses the voice-control powers of Siri to control your lock. The Schlage model works with Siri today, and August allows you to use voice control to lock and unlock your door with a PIN code. Apple's smart speaker, HomePod, may bring additional functionality to Apple-friendly smart locks this year or bring new locks onboard, so if you're a fan of Apple and Siri, stay tuned for that.
Then there's Amazon's Alexa. After first rolling out support for the August Smart Lock, Amazon's virtual voice assistant now has an entire set of software development tools for smart lock integrations, along with a whole host of partners, including Yale, Kwikset, Schlage and the Z-Wave Alliance. As a result, it's easier than ever to find a smart lock that you can control with Alexa voice commands. Though many lock makers haven't yet added unlocking capability via voice, for security reasons, you can still lock your doors and check the status of your lock by asking Alexa.
Google is also in the mix with Google Assistant. Google Home ($79 at Walmart) speakers house this voice assistant compatible with a growing number of smart home devices. August smart locks work with Google and Nest, owned by Google, has partnered with Yale on a smart lock designed to work with the Nest Secure ($399 at Walmart) system that will include Nest's Weave technology for wireless smart home communication.
The smart lock market isn't set in stone, though. Lots of changes are in the works. Assa Abloy, parent company of Yale, acquired August in late 2017. It's likely we'll see the results of that in the form of new locks or capabilities from one or both of those product lines. Nest and Yale are also working on the release of the Nest x Yale lock, which will integrate with -- you guessed it -- your Nest devices.
There are clear variations among smart locks in terms of installation, wireless technology and integration with third-party products, but they all still do roughly the same thing -- give you advanced, remote control access to a space. But there are still some nuances in terms of how that advanced smart control happens.
Most Schlage, Kwikset and Yale locks, including the Schlage Sense Bluetooth Deadbolt, the Schlage Camelot Touchscreen Deadbolt, the Yale Real Living Touchscreen Z-Wave Deadbolt and the forthcoming Nest x Yale lock all have touchpads. Don't have your lock's app pulled up? Just enter your secret code and voila! Your door will open without a key.
That said, installing a smart lock doesn't necessarily mean giving up your key. You might not need to use one if you choose to rely on coded or app-enabled entry, but most smart locks still let you use your key, too.
Others, like the Yale Assure SL Touchscreen Deadbolt and the Kwikset Obsidian, ditch the keyway altogether. With smart locks like those, you can lose your keys for good -- and there's zero risk of someone breaking in by picking your lock.
Locks like August don't come with touchpads as a standard option, but they do offer plenty of useful automatic functions -- use the auto-unlock feature and you shouldn't have to do anything -- no app, no secret pin, no effort at all. (August now offers an $80 keypad accessory if you want to add this in, though.) August's Smart Lock Pro also comes with DoorSense, a feature that can tell you if your door is open, closed, locked or unlocked.
It's the same with Poly-Control's Danalock ($50 at Amazon) (in theory, at least); it has a "knock to unlock" option that literally means you should be able to "knock" on your smartphone to unlock your front door, but it didn't work during our testing. The Sesame Lock, however, did have a functioning "knock to unlock" feature, if that's something that appeals to you. The Kwikset Kevo was much more successful -- if it detects your smartphone or a keychain fob, it'll let you in with just a tap.
Each brand seems to take a slightly different approach, but the results are pretty much the same. Think about the one that makes the most sense to you and go from there.
Some locks offer scheduled key codes, allowing certain access codes to work only during specific days and times. Some locks also include activity history, letting you know when doors are locked and unlocked and by which access codes. The Kwikset Premis allows you to limit access to specific days and times or create codes that expire after a set amount of time.
Another general concern is battery life, but this will vary significantly (for all smart locks) based on how much you lock or unlock your door, the quality of the batteries you're using, if your deadbolt occasionally sticks and requires extra effort from the built-in motor, and even the weather -- colder temperatures can hurt battery life. Battery power shouldn't deter you from buying a smart lock you love, though. In fact, almost all keyless smart locks now include a pair of jumpstart nodes on the bottom of the lock. Grab a 9V battery and connect it to the nodes for just enough power to enter your keypad code and unlock the lock.
Smart locks can grant convenient access to more than just your friends, family and neighbors. We've speculated about the possibility of smart locks letting delivery people into your home, and it's happening this year. Amazon tested its Amazon Key home delivery service last year. An Amazon Key kit includes the Amazon Cloud Cam and compatible smart lock. Current smart lock choices are Kwikset Kevo Convert, Kwikset 914 and Yale Assure. August also recently announced a partnership with last-mile delivery service Deliv for its in-home delivery service, August Access, if you own an August smart lock.
Amazon Key aims to eliminate the porch problem by letting delivery people put packages inside your front door.
We sat down with August CEO Jason Johnson to discuss what's on the horizon for smart locks and in-home delivery. If the idea of someone unlocking your door to deliver a package makes you nervous, you're not alone. Companies pioneering this territory are well aware of consumer resistance. But, if the thought of packages delivered inside your home safe from would-be thieves and mother nature appeals to you, August, Yale and Kwikset are likely to have the most in-home delivery compatible locks, at least for now.
As we mentioned earlier, a smart lock doesn't necessarily equal a safer lock. If you're skeptical of the whole smart-home thing and are unsure about a lock that's linked over Bluetooth, Wi-Fi or another protocol, this sort of product definitely isn't for you and that's OK.
With smart locks, it's really all about trying to add a small convenience to your daily life. They can make getting into your house easier when your arms are full and your keys are out of reach. They can also save you a trip the hardware store to have a key made for a new roommate or having to dash home on your lunch break to let in a service professional. Smart locks can really save the day when you need to grant access to someone and you're not home.
In the end though, there's no right answer in terms of the model you should buy, but considering key details (see what I did there?) like whether you should keep or replace your current deadbolt, what protocol best lines up with your smart-home needs, what, if any, third-party devices you'd like your lock to work with, and if you prefer a touchpad or a more traditional lock design -- will help you narrow down your options so you can quickly find the right smart lock for you.
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Ready to find the best smart lock for you? Check out our best smart locks for 2018. Interested in a broader home security setup? Be sure to check out our home security buying guide.
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