Two of the best smart locks of 2019.

One huge advantage smart locks have over conventional deadbolts is that you never have to carry a physical key. Instead, many smart locks have keypads for entering a PIN code and/or electronic keys. (The "key" lives in electronic form in an app on your smartphone and communicates with your lock wirelessly.)

With both PIN codes and electronic keys, you can create, delete, and limit them to certain time periods with a few swipes on your smartphone. And when somebody no longer needs access, like the cat sitter, you can revoke access just as easily as you granted it. That's just one of the features that differentiates this category of locks.

"Smart locks can add an invaluable level of peace of mind," says Misha Kollontai, CR's test engineer for door locks. "Depending on the model, you can view the status of your lock from anywhere and track who opens your door and when."

Below you’ll find the six best smart locks from our tests, with models from August, Friday Home, Kwikset, Schlage, and Yale. CR members can click on the model names for detailed ratings and reviews. Three of our picks are retrofit smart locks, which only replace the part of the lock that’s on the interior side of your door. The exterior part of your deadbolt will remain on the door. That means you can still use your same physical keys but also lock and unlock the door from your smartphone app.

To evaluate both smart and conventional locks, CR engineers conduct kick-in tests using a custom-built jig that swings a 100-pound steel battering ram against a locked door. They repeat the test eight times, with the ram raised to ever-increasing heights, or until the lock fails. The models that fail—at least half do—go through another round, this time with a reinforced box strike plate installed on a new lock sample. CR’s experts have found that this basic DIY upgrade—adding a reinforced box strike plate—improves security for any lock.

For more on our tests and what to consider as you shop, see our door lock buying guide. And for more than 20 options to protect your front door, check out our smart lock ratings.

Go to Consumer Reports’ 2019 Holiday Gift Guide for updates on deals, expert product reviews, insider shopping tips, and much more.

Best Smart Locks

Kwikset Premis 919TRL 15 SMT

    CR's take: The Kwikset Premis is best for iPhone users because it works with Apple's HomeKit smart home ecosystem and Siri digital assistant. In our tests, the Premis receives an Excellent rating for its resistance to kick-ins as sold. Its physical design also makes it very resistant to lock picking, but it's susceptible to attack from a cordless drill. Still, this lock comes with some very helpful features, including an access log to keep track of who comes and goes, a tamper alarm, an auto-lock feature, and the ability to create and share PIN codes with others. Just note that because this lock uses Bluetooth and HomeKit, you will also need an Apple TV, Apple HomePod, or Apple iPad (that is constantly plugged into an outlet) in your home to control the lock remotely.

    Schlage Encode WiFi BE489WB-CAM-619

      CR's take: The Schlage Encode is one of the first smart locks on the market that connects directly to WiFi, negating the need for an additional hub or bridge to connect it to the internet. While the Encode features a keypad for PIN codes, you can also create electronic keys for guests so they can lock and unlock it without a numeric code. In our tests, the Encode stands up very well to kick-ins as sold, but it's more susceptible to picking and drilling. It does receive an Excellent rating for its ease of remote access, though. Its many features include remote control via smartphone app, voice control via Amazon Alexa and Google Assistant, an access log, an auto-lock feature, a tamper alarm, and compatibility with Amazon Key in-home delivery service.

      Yale Assure YRD256-CBA-619

        CR's take: The Yale Assure Lock SL uses its sister company August's smart lock app and platform. That means it offers many of the same features as the August smart locks below, including remote control, an access log, voice control (via Amazon Alexa, Apple HomeKit/Siri, and Google Assistant), electronic keys, and a door open/close sensor. In our tests, the Yale Assure Lock SL receives a Very Good rating for its resistance to drilling. It's also impossible to pick because it's keyless, and it's very resistant to kick-ins as sold.

        Best Retrofit Smart Locks

        August Smart Lock AUG-SL04-M01-S04

          CR's take: The retrofit August Smart Lock offers a lot of features for the money. You'll get auto locking and unlocking, voice control via Amazon Alexa and Google Assistant (not Apple HomeKit/Siri), access logs, electronic keys, and a door sensor. The lock has remote access features, but you'll need to buy it with the August Connect WiFi adapter, $79, to get those features as well as voice control. In our tests, this August receives an Excellent rating for setup, too.

          August Smart Lock Pro AUG-SL-CON

            CR's take: The August Smart Lock Pro offers all the same features as the regular August Smart Lock above, as well as compatibility with Apple HomeKit/Siri and Z-Wave Plus smart home hubs. It rates Excellent for convenience in our tests and is very easy to set up. You'll need the August Connect WiFi adapter, $79, to get access to all of the lock's features.

            Friday Home Friday Labs FLSS

              CR's take: We tested the Friday Lock and found it incredibly easy to set up, with an Excellent rating for connectivity. It's not as feature-rich as competitors, but it covers the basics, such as auto locking, auto unlocking, electronic keys, access logs, and remote control thanks to its WiFi connection. This lock also supports Apple HomeKit and voice control via Siri, making it a great choice for Apple users.