Keyless entry has moved well past novelty. Smart locks are now a mainstream home security upgrade — but with dozens of options across wildly different price points and feature sets, "best" depends almost entirely on what you need from your front door. Here's how to understand the landscape before you decide.
A smart lock replaces or augments your traditional deadbolt, allowing you to lock and unlock your door without a physical key. Instead, access is granted through a PIN code, smartphone app, fingerprint, key fob, or voice command — sometimes all of the above.
Most smart locks fall into two hardware categories:
Both types can offer equally strong security. The difference is mostly about aesthetics, installation complexity, and whether you want to keep a physical key backup.
Connectivity determines what your lock can and can't do remotely. The main options:
| Connection Type | What It Enables | What You Need |
|---|---|---|
| Bluetooth only | App control within range (~30 ft) | Smartphone nearby |
| Wi-Fi built-in | Remote lock/unlock from anywhere | Home Wi-Fi network |
| Z-Wave / Zigbee | Smart home integration (voice, automations) | Compatible hub (SmartThings, Wink, etc.) |
| Wi-Fi + hub | Remote access + smart home integration | Lock-specific bridge or smart home hub |
A lock that only uses Bluetooth is simpler and often has better battery life, but you can't check whether you left the door unlocked from across town. If remote monitoring matters to you, Wi-Fi connectivity (either built-in or via a bridge accessory) is worth prioritizing.
Not every feature adds meaningful security — some are convenience-first. Knowing the difference helps you avoid paying for things you won't use.
Access methods:
Security features that actually matter:
Convenience features:
There's no universally best smart lock — the right fit depends on several variables:
Your existing door hardware — Not all smart locks fit all door thicknesses, backset measurements, or existing hole configurations. Measuring before buying prevents the most common installation headache.
Your smart home ecosystem — If you're already using Apple HomeKit, a lock that doesn't support it will require a separate app and won't integrate with your existing automations. The same logic applies to Amazon Alexa and Google Home users.
Your household's tech comfort level — A lock with a simple keypad and auto-lock may serve a less tech-oriented household better than a feature-heavy app-dependent model.
How you share access — Households that frequently need to grant temporary access (to cleaners, contractors, or guests) benefit significantly from locks with robust guest code management. Some platforms let you schedule codes by day and time; others only allow permanent codes.
Rental or renter status — Renters need landlord approval for most lock replacements. Some retrofit models are specifically designed to avoid exterior modifications, which can simplify that conversation.
Smart locks run on batteries — typically AA or AAA. Most models last several months to over a year on a set of batteries, but high-traffic doors or locks with Wi-Fi radios running constantly drain faster. Key questions to ask:
A lock that dies without warning and locks you out is a reliability failure, regardless of how many features it advertises.
Smart locks collect usage data — access logs, timing patterns, sometimes location data if auto-unlock is enabled. This data is typically stored on the manufacturer's servers. It's worth reviewing:
Some locks offer local control options (operating via a hub you own, without relying on the manufacturer's cloud), which addresses these concerns for privacy-conscious buyers.
A smart lock is one layer of a door's security — not the whole story. Locksmith and security professionals consistently point out that:
Evaluating your full entry point — not just the lock hardware — is what most security professionals recommend before investing in any upgrade.
