Are Smart Locks Safe?

On this page (7 sections)

1. Are smart locks safe for a front door?
2. Which digital safeguards matter most?
3. Which of these locks fits your household?
4. What happens when Wi-Fi or the batteries fail?
5. Are fingerprint smart locks safe to use?
6. How should you set up and care for a smart lock?
7. How do you decide whether a smart lock is safe for you?

Smart locks can be safe when the door, deadbolt, and access controls work together. A connected lock adds useful ways to manage entry, but you still need correct installation, secure accounts, and a plan for lost power.

The best choice depends on who needs access and how much upkeep you'll do. Start with door fit and backup entry, then decide whether remote control, fingerprints, or phone-based entry solves a daily problem.

Are smart locks safe for a front door?

A smart lock can secure a front door when its mechanical protection and fit suit the doorway. Smart features cannot make up for a split frame, loose strike plate, or bolt that barely enters its pocket.

Check door thickness, backset, and clearance around the interior hardware before ordering. Backset is the distance from the door edge to the center of the lock hole.

With the door closed, the bolt should move freely without lifting, pulling, or pushing the door into place. Fix sagging hinges or strike alignment before adding a motor that must move the same bolt.

Certification helps you compare mechanical protection, but read the exact certification rather than assuming every certified lock offers the same level. Schlage says the Encode holds BHMA's highest residential security, durability, and finish certification; ULTRALOQ and Aqara also identify their models here as BHMA-certified.

For a broader starting point, read our guide to smart locks and keyless entry door locks. Use how to install a smart lock for the door and fitting checks.

Which digital safeguards matter most?

Prioritize account protection, controlled access, and ongoing software support. Encryption protects communications, while passwords and user permissions help control who can send commands.

Does encryption make smart locks safe?

Encryption helps protect smart-lock communications, but it doesn't protect an account whose password someone else knows. Use a unique password and enable multifactor authentication wherever the connected service offers it.

Secure your phone with a screen lock, too. If it goes missing, use the relevant account controls to remove its access rather than relying only on the phone's screen protection.

Install available app and lock firmware updates, and check how the brand provides security support before buying. A lock's remote features create an ongoing account and software responsibility.

How should you share access codes?

Give each person a separate code where possible, and remove access when the need ends. One household code shared with every visitor is harder to manage because you cannot revoke just one person's access.

Avoid birthdays, street numbers, and simple sequences. Use scheduled or temporary credentials for cleaners and guests when the lock supports them, and give administrator rights only to people who need to manage the system.

Activity history can help explain which credential was used, but it doesn't prove who entered. Someone can share a code or enter alongside another person.

Which of these locks fits your household?

Choose by daily entry habits and setup requirements, rather than the number of features. These 3 models suit different households, and each has a reason to pass.

Schlage Encode: for managing entry from away

Choose the Schlage Encode if you want remote code management and alerts without adding a separate hub. Built-in Wi-Fi connects it to the Schlage Home app, which supports up to 100 access codes, activity history, and customizable notifications.

Its door-movement and forced-entry alarm adds an audible warning layer. An alarm signals a problem; the door, frame, and deadbolt still provide the physical barrier.

Skip it if fingerprint entry or Apple home key is central to your plans. This is the code-and-app choice among these options.

Check its supported door thickness of 1-3/8 to 1-3/4 in and backset of 2-3/8 or 2-3/4 in. It uses 4 AA batteries, with Schlage claiming up to 6 months under typical use.

Ultraloq Bolt SE Wi-Fi: for mixed entry preferences

Choose the Ultraloq Bolt SE Wi-Fi when some household members prefer fingerprints and others want codes or app access. It stores up to 50 fingerprints and 50 passcodes, with permanent, scheduled, or temporary access sharing.

Its direct Wi-Fi connection needs a 2.4 GHz network; ULTRALOQ recommends keeping the router within 70 ft. Check reception at the door because distance alone doesn't account for walls or interference.

Skip it if you want Matter access without arranging the required hub, or expect an included door sensor. The sensor isn't included, so don't treat its auto-lock timer as proof that the door has closed.

ULTRALOQ claims up to 18 months of battery life with Thread. Don't use that figure as your replacement schedule for every connection setup.

Aqara U400: for compatible Apple households

Choose the Aqara U400 if you want Apple home key or hands-free UWB entry and can meet the hardware requirements. Its rechargeable power system also suits buyers who prefer charging a battery to replacing disposable cells.

UWB entry requires a Thread-enabled Apple Home hub and a supported device: iPhone 11 or later, excluding SE and 16e, with iOS 18.5+, or Apple Watch Series 6 or later, excluding SE, with watchOS 11.5+.

Apple home key requires a compatible Apple Thread-enabled Matter controller. Each other smart-home ecosystem also needs its own compatible Thread-enabled Matter controller for that platform's features.

Skip it if you want those Apple entry features without compatible hardware or don't want a charging routine. Our Aqara U400 review helps you weigh that setup against its entry options.

What happens when Wi-Fi or the batteries fail?

An internet outage and a dead battery need different backup plans. Losing Wi-Fi may stop remote commands and notifications, while losing lock power can stop the keypad and fingerprint reader too.

All 3 locks here include physical keys. Keep a key with a trusted person or in another secure place you can reach without entering the home; a backup inside the locked house won't help.

For connection details, see smart locks without Wi-Fi. Confirm which local entry methods your chosen model supports before relying on them.

The U400 allows USB-C charging while the lock remains online or charging its removed battery separately. Aqara claims up to 6 months per charge and provides a voice warning below 20%.

Respond to battery warnings promptly, and follow the recommended battery type or charging method. Repeated motor strain from a misaligned door is another reason to fix binding rather than simply replace batteries more often.

Are fingerprint smart locks safe to use?

Fingerprint entry can reduce code sharing, but enrollment and fallback access still need care. Remove stored fingerprints when someone's access should end, just as you would delete their code.

Before choosing a biometric lock, check how it stores fingerprint information and how to erase it. Don't assume one brand's privacy practices apply to another.

Keep another entry method ready for occasions when a finger doesn't register. Our guide to whether fingerprint door locks are safe covers the privacy and access tradeoffs in more detail.

How should you set up and care for a smart lock?

Finish setup with the door open, then verify normal operation with the door closed while you have backup access available. This reduces the chance of locking yourself out during configuration.

1. Confirm smooth manual bolt movement before enabling motor operation.
2. Set up the administrator account, updates, and individual user credentials.
3. Practice each entry method your household will use.
4. Choose an auto-lock delay that allows normal arrivals and departures.
5. Check alert settings and learn what each notification means.
6. Record the battery routine and arrange secure backup-key access.

Don't assume an auto-lock timer closes the door or confirms it is shut. Check door-position features separately, and make sure everyone understands the difference between a locked bolt and a closed entrance.

Clean the exterior as the instructions allow, and avoid spraying cleaner into the keypad or keyway. Periodically check mounting screws, door alignment, active users, and battery status.

How do you decide whether a smart lock is safe for you?

Smart locks are safe choices when fit, access control, and upkeep match your household. Keep a conventional deadbolt if you won't maintain another account or battery routine.

Pick Schlage Encode for Wi-Fi code management and an alarm, Ultraloq Bolt SE Wi-Fi for households using fingerprints and codes, or Aqara U400 for compatible Apple entry features and rechargeable power.

Before ordering, use our guide to choosing a smart lock for your front door to confirm the fit and connection requirements. Then follow the smart lock installation guide with your backup entry plan already arranged.

Frequently asked questions

Are smart locks safer than regular deadbolts?

A smart lock isn't automatically safer than a regular deadbolt. Mechanical strength, door condition, and correct installation still matter; separate access codes and activity alerts can improve access management, but batteries, connected accounts, and software add tasks you must keep up with to preserve those benefits.

Can a smart lock be hacked?

Smart locks can face digital attacks, so account and software security matter alongside the deadbolt. Use a unique account password, enable multifactor authentication if available, protect your phone with a screen lock, and install firmware updates; remove former users and avoid sharing the main administrator account.

What happens if a smart lock battery dies?

Powered entry methods may stop when the battery dies, so arrange backup entry before that happens. All 3 locks discussed here include physical keys; keep yours secure and accessible outside the locked home, respond to battery warnings, and follow the model's instructions for battery replacement or charging.

Do smart locks work if Wi-Fi goes out?

Many smart locks retain local entry during a Wi-Fi outage, provided the lock still has power and the chosen entry method works locally. Remote control and notifications may stop; our guide to smart locks without Wi-Fi explains why an internet outage and a dead lock battery need different backup plans.