By James Walker
Quick Answer: Yes, smart locks are IoT devices. They connect to Wi-Fi, Bluetooth, or a hub, send and receive data over a network, and can be controlled remotely through an app. That connectivity is what makes them “smart” instead of just electronic.
If you’ve been comparing keypad deadbolts, app-controlled locks, or biometric entry systems, you’ve probably wondered: are smart locks IoT devices in the same sense as a smart thermostat or camera? The answer is yes, but the “why” matters for your network setup, your data, and your backup entry plan. This guide covers what makes a smart lock part of the Internet of Things, what that means for your home network, and how to choose and install one without creating new security gaps.
IoT Connectivity
Access Methods
Privacy & Setup
Battery & Backup Entry
This article is for general educational and purchasing guidance only. It does not guarantee security outcomes or replace advice from a licensed installer, electrician, or security professional. Some installations may require licensed electrical work or local permit compliance. Always check your local building codes and consult a qualified professional when needed.
What Makes a Smart Lock an IoT Device
The term “IoT” stands for Internet of Things. It describes any physical object that can connect to a network, collect or share data, and be controlled remotely. A smart lock fits this definition because it does three things a traditional lock cannot do.
First, it connects to a network. Most smart locks use Wi-Fi, Bluetooth, Z-Wave, Zigbee, or the newer Matter and Thread standards. Second, it communicates. The lock sends status updates, such as locked, unlocked, or low battery, to an app or hub. Third, it can be controlled remotely or through automation, such as auto-locking when you leave or unlocking when a verified guest arrives.
So when someone asks, are smart locks IoT devices, the answer comes down to this connectivity and remote-control function. A lock that only opens with a physical key is not part of the Internet of Things. A lock that reports its status to your phone is.
Note: Not every “smart-looking” lock is actually internet-connected. Some keypad locks only store codes locally and never connect to Wi-Fi or an app. These are electronic locks, not full IoT devices, since they cannot send or receive data over a network.
Why This Distinction Matters for Homeowners and Renters
Knowing that smart locks are IoT devices changes how you should think about them. An IoT device is also a small computer on your home network. It can be updated, it can have a software bug, and in rare cases it can be targeted the way a router or camera can.
For a homeowner, this means the lock is now tied to your Wi-Fi, your phone, and possibly a cloud account. For a renter, it means resetting the device when you move out protects your privacy, not just removes a physical object.
Ignoring the IoT side of a smart lock, such as never updating firmware or never changing default app passwords, won’t make the lock insecure overnight. The risk is closer to leaving a window unlocked: a quiet weak point an attacker could use if everything else lines up.
A Realistic Example
Picture a household installing an app-controlled smart deadbolt on the front door, connected to home Wi-Fi alongside a video doorbell on a separate hub. If the homeowner never updates the lock’s firmware or reuses an old password for the lock’s app account, the weak point isn’t the deadbolt mechanism. It’s the account and network behind it. This is why IoT awareness matters as much as physical lock quality.
How Smart Locks Communicate: A Beginner-Friendly Look
Smart locks rely on one or more of these connection types. Understanding them helps you know what “IoT” actually looks like in practice on your front door.
Typical Smart Lock Setup Flow
Install the deadbolt or lock body on the existing door hardware.
Insert batteries or, for wired models, confirm low-voltage wiring is connected correctly.
Use Bluetooth or Wi-Fi to link the lock to the manufacturer’s app on your phone.
If the lock supports Wi-Fi directly, connect it to your router, ideally a guest or IoT-only network.
Add keypad codes, app users, or biometric profiles, and confirm a physical backup key works.
Check for and install any available firmware update before relying on the lock daily.
This is a practical guide to a typical setup, not a universal standard. Steps vary by brand and door type.
Wi-Fi locks connect directly to your router, which means they don’t need a separate hub but do use more battery. Bluetooth locks connect only when your phone is nearby, which saves battery but limits remote access unless paired with a hub. Z-Wave and Zigbee locks need a smart home hub to reach the internet, while Matter is a newer standard designed to let locks from different brands work together through a single connection point.
Comparing Connection Types
Access Methods: Keypad, App, and Biometric
Because smart locks are IoT devices, they typically offer more than one way to get in, and each method has different practical tradeoffs.
Keypad Entry
Uses a numeric code entered on the lock itself. It often works even if Wi-Fi is briefly down, and it is easy to share temporary codes with guests or service providers.
App / Remote Entry
Lets you lock or unlock from your phone, including from outside the home. This depends on a working internet connection and a secured account.
Biometric Entry
Uses a fingerprint or similar scan. This can speed up daily entry, though most models still need a backup code or key for reliability.
Physical Key Backup
Most smart locks still include a traditional key cylinder. Keeping at least one working backup key on hand is a practical habit, not a sign the smart features failed.
Tip: In my testing experience, keeping one access method completely independent of Wi-Fi, such as a keypad code or physical key, can help you avoid being locked out during a router outage or app update issue.
Privacy and Data Considerations for Smart Locks
Since smart locks are IoT devices, they generate data: entry logs, timestamps, and sometimes user names tied to each unlock event. This is often stored in the manufacturer’s cloud, though some locks support more local-only operation through a hub.
This doesn’t mean the data is unsafe by default, but treat the lock’s app account like any other sensitive login. The Federal Trade Commission’s guidance on securing internet-connected devices recommends changing default usernames and passwords and enabling encryption and two-factor authentication where available, which applies directly to smart lock apps.
Cloud Storage or Local-Only Operation: A Simple Decision Path
Ask these questions in order:
If yes, you likely need a cloud-connected or hub-based lock. If no, a Bluetooth-only lock with local control may be enough.
If not, look for hubs or ecosystems that emphasize local processing and review the privacy policy before buying.
If yes, app-based user management is often used for this, but it also means more accounts to secure with strong, unique passwords.
This is a practical guide for typical households, not a security certification process.
The Cybersecurity and Infrastructure Security Agency notes that internet-connected devices should have their security settings reviewed and adjusted to match your needs, since enabling extra convenience features can sometimes increase exposure. For a smart lock, this might mean turning off remote access entirely if you never use it, or disabling voice assistant integration if you don’t need hands-free unlocking.
What Beginners Often Miss
New smart home users often set up the lock and stop there. A more experienced user will also check the app’s permission settings, confirm whether the lock auto-updates firmware, and review which household members or guest codes are still active months later. Removing old guest codes is a simple step that’s easy to forget.
Compatibility With Your Door and Home Setup
Before buying, check whether the smart lock fits your existing door. Most retrofit smart deadbolts are designed to fit standard door prep, but older doors, double-cylinder locks, or non-standard backsets can complicate installation.
Warning: If your door has an unusual backset, a metal security door, or a frame that needs reinforcement, do not force a retrofit kit. Forcing hardware into the wrong door prep can weaken the strike plate or door frame. Check your local building codes and consult a qualified professional if the door needs modification.
Renters and Multi-Unit Buildings
If you rent, check your lease before replacing a lock, even with a smart version. Many landlords require the original lock to be reinstalled at move-out, or they may want a copy of any new keys or codes. This is a property management question, not a security question, so always check with your landlord or property manager first.
Common Smart Lock Problems and Likely Causes
Because a smart lock connects to a network like other connected devices, many “lock problems” are actually connectivity or power problems rather than mechanical ones. This table separates the two so you can troubleshoot faster.
Problem vs. Likely Cause
Battery Life and Backup Entry Planning
Most smart locks run on standard AA or CR123 batteries and typically last several months to about a year, depending on usage and connection type. Since the lock is an IoT device that’s always listening for a signal, frequent app use and remote access can shorten battery life faster than keypad-only use.
Always plan a backup entry method. This usually means keeping a physical key accessible, or making sure a household member has an alternate keypad code memorized.
Red Flags That Your Smart Lock Setup Needs Attention
Ignoring these can lead to an unexpected lockout at the worst time.
Check the app’s update history; outdated firmware may miss security fixes.
Audit and remove codes for guests, contractors, or past tenants regularly.
A reused password is one of the most common ways accounts get compromised.
This is a practical checklist, not a guarantee that addressing these items prevents all security incidents.
Safe Setup vs. Risky Setup
Because the lock connects to your home network, how you set it up matters as much as which model you buy.
Setup Comparison
Which Smart Lock Setup Fits Your Home
Not every smart lock fits every household. Matching the lock’s connection type and features to your living situation helps avoid buying the wrong setup.
Device Fit by Household Type
Smart Lock Fit Dashboard
Bluetooth or retrofit, no hub, no drilling
Wi-Fi lock, simple app, no hub required
Z-Wave or Zigbee tied into existing hub
Matter-compatible for cross-brand support
A quick-reference guide, not a personalized recommendation for your specific home.
Common Buying and Setup Mistakes
Many issues with smart locks come from setup choices, not the device itself. Use this checklist to compare your setup against common mistakes.
How Important Is Each Security Layer
No single feature makes a smart lock secure on its own. The layers work together, and some carry more practical weight day-to-day than others.
Relative Setup Priority (Practical Guide)
Strong, unique app password
Keeping firmware updated
Network segmentation (guest/IoT Wi-Fi)
Biometric or advanced access features
This reflects typical setup priority for most households, not scientific research data. Your situation may differ.
In practice, this means a strong password and updated firmware do more day-to-day work than choosing a lock with a fingerprint sensor. Fancy access methods are convenient, but they don’t replace basic account hygiene.
When to Contact a Professional Installer or Electrician
Safety Note: Most retrofit smart locks are designed for simple screwdriver installation and do not involve household wiring. However, some smart lock systems integrate with wired access control panels, electric strikes, or low-voltage transformers. If your setup involves any electrical wiring beyond batteries, hire a licensed electrician. If you’re unsure whether your door, frame, or building requires permit compliance for hardware changes, check your local building codes or consult your landlord or property manager first.
DIY vs. Hire a Professional
A Few Products Worth Knowing About
This article may contain affiliate links. If you buy through these links, we may earn a small commission at no extra cost to you. We only mention products that are relevant to the topic and do not replace advice from a qualified installer or professional.
Wi-Fi Smart Deadbolt with Keypad
This style of lock may support daily routines like remote locking confirmation and temporary guest codes, which can help simplify access for renters or beginners who don’t want a separate hub.
Z-Wave or Zigbee Smart Lock for Hub Setups
For households that already use a smart home hub, this type of lock can help with automation consistency, such as auto-locking routines tied to other connected devices.
Helpful Resources on Connected Device Security
For more general guidance on securing internet-connected devices like smart locks, the FTC’s guide to securing internet-connected devices at home covers password hygiene and account security steps that apply directly to smart lock apps. The CISA guide on securing the Internet of Things offers additional practical steps for reviewing device settings and reducing exposure.
Frequently Asked Questions
Are smart locks IoT devices even if they don’t use Wi-Fi?
Yes. A lock that uses Bluetooth, Z-Wave, or Zigbee to communicate with a phone or hub is still part of the Internet of Things, since it connects to a network and shares data, even if it doesn’t connect to Wi-Fi directly.
Can a smart lock be hacked like other IoT devices?
Like other connected devices, a smart lock can have vulnerabilities, especially if firmware isn’t updated or the app account uses a weak password. Following basic IoT security practices, such as strong passwords and regular updates, can help reduce this risk, though no device can be guaranteed completely secure.
Do smart locks work during a power or internet outage?
Most smart locks run on batteries, so a power outage alone usually doesn’t stop them from working. An internet outage may disable remote app access, but keypad codes and physical keys typically still work since they don’t depend on an internet connection.
Do I need a smart home hub to use a smart lock?
It depends on the connection type. Wi-Fi and many Bluetooth locks can work without a separate hub. Z-Wave and Zigbee locks generally require a hub to connect to the internet and your phone app.
Is it safe to control a smart lock from my phone over the internet?
Remote control can be safe when the app account uses a strong, unique password and two-factor authentication if available. If you don’t need remote access, some users choose to disable that feature and rely on keypad or local Bluetooth control instead.
Should I install a smart lock myself or hire a professional?
Most retrofit smart deadbolts are designed for DIY installation on standard doors. If your setup involves wiring, an access control panel, or door frame modification, hire a licensed electrician or professional installer instead.
Can renters install a connected lock that works over Wi-Fi or Bluetooth?
Often yes, especially with retrofit locks that reuse existing deadbolt hardware, but renters should check their lease and talk to their landlord or property manager first, since some leases require the original lock to be reinstalled at move-out.
Final Thoughts
Smart locks are IoT devices because they connect to a network, exchange data with an app or hub, and can be controlled remotely. That connectivity is what gives them useful features like remote access and activity logs, but it also means basic IoT habits, like strong passwords, regular firmware updates, and a reliable backup entry method, matter just as much as the lock’s physical build quality.
For straightforward retrofit installations on a standard door, many homeowners and renters can handle setup themselves. For anything involving wiring, access panels, or structural changes to a door or frame, consult a licensed electrician or professional installer, and always check your local building codes before making permanent changes.
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