An automatic door lock replaces the manual turn of a key with a system that locks your door on its own. That might mean a keypad, a fingerprint scan, a phone app, or a lock that engages automatically once the door closes. For many people, it’s less about smart-home trends and more about convenience and peace of mind.
This article breaks down the main types of automatic door locks, their practical benefits, and the features you should pay attention to before choosing one. You’ll also get a clear look at safety considerations, so you can decide if this technology fits your needs.
Types of Automatic Door Locks
An automatic door lock can work in different ways, depending on how you unlock it and how it’s built into the door. Most systems fall into two simple groups: how you access the lock and how the lock is installed.
Types by access method
The access method is how the lock decides whether to let someone in.
- Keypad / keyless door locks: These locks open when you enter a numeric code on a keypad. They’re straightforward and widely used. There’s no app to manage and no key to carry. That makes them popular for homes, rentals, and doors that need quick access.
- Biometric locks: Biometric locks use physical traits instead of codes or keys. Most rely on fingerprint scans, though some models also support facial recognition, palm vein, or iris scanning.Because biometric data is unique to each person, these locks remove the need to remember a code or carry anything with you.
- Smart locks (app-based): Smart door locksconnect to your phone through Bluetooth, Wi-Fi, or both. You unlock the door using an app, and many systems also support temporary access codes and remote control.These locks are common in modern homes because they can fit into broader smart-home setups. They work well when you want visibility and control, even when you’re away.
- RFID and key fob locks: These locks open when a card or key fob is held near the reader. The system checks the credential and releases the lock if it’s valid.RFID locks are common in offices, apartment buildings, and shared spaces.
Types by lock format
The format describes how the lock fits into the door.
- Deadbolt smart locks: These are among the most common options for exterior doors. The lock controls a deadbolt, either replacing it or automating it. Deadbolt smart locks are often used on front and back doors where a solid locking bolt is preferred.
- Lever-style smart locks: Instead of a bolt, these locks operate a spring latch and use a lever handle. They’re often found on interior doors, offices, or spaces where ease of use is important.Lever-style locks can still be automatic, using codes, cards, or apps for access.
- Mortise-style smart locks: Mortise locks fit into a rectangular pocket cut into the door. This design is common in older buildings, apartments, and some commercial doors.Mortise-style automatic locks are built to match that structure and often combine the latch and deadbolt into one unit.
- Retrofit devices for existing deadbolts: Retrofit locks attach to the inside of an existing deadbolt. The outside hardware stays the same, including the key cylinder. Inside, a motor turns the lock for you.This option works well when you want automation without changing the door’s appearance or replacing the full lock.
Benefits of Installing an Automatic Door Lock
An automatic door lock isn’t just about new technology. It solves everyday problems that come up at home and at work.
Fewer keys to manage
Physical keys are easy to lose and hard to track. Automatic locks let you rely on codes, fingerprints, or mobile app instead.
You no longer need to hide keys under mats or make copies for everyone. You can add or remove access easily without changing the hardware. That’s useful for families, short-term guests, service workers, and staff.
Better control over access
Many systems allow different codes for different people. They also send alerts to your phone whenever the door is locked or unlocked and keep a full activity log. You can see who’s coming and going and match activity with individual access codes or even cameras. The result is clearer control and less guesswork.
Less worry about locking the door
Auto-lock features remove a common source of stress. The door can lock itself after a set time, even if you forget, or you can check the status and lock it from anywhere using your phone. Over time, that peace of mind adds up.
Key Features to Look for When Choosing an Automatic Door Lock
Considering buying an automatic door lock? That’s a smart move, but know that the locks are not the same. Some focus more on security, others on convenience or smart features. To choose the right one for your home or business, here are the key features you should look for:
- Strong security features: This is a non-negotiable. Always look for locks with built-in protections, such as auto-locking, tamper alerts, activity logs, and encryption.
- Security certifications and grades: Many high-quality locks are tested under ANSI/BHMA grading systems. These grades reflect strength and durability under repeated use. Grade 1 is the highest and safest rating.
- Multiple access options: A good automatic door lock should offer more than one way to unlock the door, like through PIN codes, fingerprints, face recognition, key cards, mobile apps, or even a physical key.
- Remote access and connectivity: Many smart locks connect via Wi-Fi or Bluetooth, so you can lock or unlock doors remotely. Some models also send alerts when the door is used.
- Smart home integration: If you already use smart devices, choose a lock that works with systems like Alexa, Google Assistant, or Apple Home.
- Power source and backup options: Most automatic door locks run on batteries, while others are hardwired. Battery-powered locks are easier to install but need occasional replacements.
- Ease of installation: Some locks are designed for quick DIY installation, while others may need a professional.
Are Automatic Door Locks Safe?
So, are smart locks safe? A smart lock can be very safe when it’s chosen and set up the right way. Like any lock, it has two jobs. It needs to hold up physically, and it needs to behave reliably when power or connectivity changes.
Good safety starts with solid hardware. A lock should be built to handle daily use, door movement, and basic force. Installation matters just as much. Even a strong lock won’t perform well if it’s poorly aligned or loosely mounted.
Power planning is another key factor. Automatic locks rely on batteries or electricity, so safe designs include clear low-battery warnings and backup access, such as a physical key or emergency power option. That prevents lockouts when batteries run down.
If the lock connects to an app, basic digital habits help. Keep software updated, use strong passwords, and limit shared access. These steps don’t add complexity, but they reduce common risks.
Modern smart locks are built with strong encryption to protect your data and prevent unauthorized access. If someone enters the wrong code too many times, most locks will temporarily block access and alert you.
In short, automatic door locks aren’t risky by default. They’re safe when hardware strength, backup access, and everyday setup all work together.
Best Automatic Door Locks from eufy
If you want an automatic door lock that does more than lock or unlock the door, models with built-in cameras can simplify daily routines. You get keyless entry, better awareness of visitors, and fewer devices on your front door.
The two eufy smart locks below take that all-in-one approach, but they serve slightly different needs.
eufy FamiLock S3 Max
The FamiLock S3 Max focuses on hands-free entry and full front-door visibility. Instead of relying on fingerprints, it uses palm vein recognition, so you unlock the door by holding your palm near the sensor. This works even if your hands are wet or dirty. It also supports app control, voice commands, passcodes, and physical keys, which makes access flexible for different users.
The lock includes a 2K HDR camera with a head-to-toe view, plus HDR and night vision. That wider view helps you see visitors clearly and spot packages near the door. Inside the house, a 4-inch built-in screen lets you check who’s outside without opening an app.
Power is handled through a dual system. A large 15,000mAh rechargeable battery runs the lock, while four AAA batteries act as backup. The unit is rated IP65 and designed to operate in extreme temperatures, from -22°F to 158°F, which helps in varied climates.
What’s good:
- Palm vein unlock for touch-free access
- Multiple entry options: app, voice, passcode, and physical key
- 2K HDR camera with night vision and head-to-toe view
- Built-in 4-inch indoor screen for quick door checks
- Dual motion sensors designed to reduce false alerts
- Auto-lock with door sensor
- Dual power system: 15,000mAh rechargeable battery plus AAA backup
- IP65 weather resistance and wide temperature tolerance
- Works with Matter, Apple Home, Alexa, and Google Home
- ANSI/BHMA Grade 1 hardware rating
eufy Video Smart Lock S330
The Video Smart Lock S330 combines keyless entry with a built-in video doorbell in a simpler format. It supports fingerprint unlock, along with app control, voice commands, passcodes, and physical keys. That range of options makes it easy to share access with family members, guests, or service providers.
The front-facing camera records in 2K resolution and includes two-way audio, so you can see and speak to visitors from your phone. This is useful for handling deliveries or checking in when you’re not home. Video can be stored locally on the included chime using an SD card, which helps avoid ongoing subscription costs.
For power reliability, the lock provides low-battery alerts, includes two manual keys, and offers an emergency power port that works with a portable charger. The system connects through the included chime and supports Alexa and Google Home.
What’s good:
- Multiple unlock methods: fingerprint, app, voice, passcode, and keys
- Built-in 2K camera with doorbell and two-way audio
- Local video storage on included chime (SD card required)
- No required monthly fee for local storage
- Emergency power port and low-battery alerts
- Includes two physical keys for backup access
- Wi-Fi connection through included chime
- Works with Alexa and Google Home
Best Practices for Secure Usage of Automatic Door Locks
Using an automatic door lock is a great way to make your home more secure and convenient, but like any technology, it works best when used correctly. Here are some of the best practices:
- Always create strong and unique PIN codes instead of predictable combinations like “1234” or birthdays.
- Keep the firmware updated regularly. A reliable Wi-Fi or Bluetooth connection helps prevent missed updates.
- Use biometric features like fingerprint or facial recognition for an extra layer of security.
- Always monitor your activity logs since the smart locks let you see who enters and exits your home and when.
- Smart locks rely on batteries, so it’s important to monitor battery levels and replace them as needed.
Conclusion
An automatic door lock can make daily life easier while adding a clear layer of control at your door. The right choice depends on how you want to unlock, how your door is built, and how much visibility or connectivity you need. When you focus on solid hardware, reliable power backup, and features you’ll actually use, automatic locks become a practical upgrade, not just a tech add-on. With a thoughtful setup, they can offer convenience, consistency, and peace of mind every time you close the door.
FAQs
Is there a lock that locks automatically?
Yes. Many smart locks, like the eufy FamiLock S3 Max, have an auto-lock feature built in. After you unlock the door with a code, app, or fingerprint, the lock can secure itself again after a short delay. You usually choose the timing in the settings, often around 30 seconds to a few minutes, depending on the model. This helps prevent doors from being left unlocked by accident.
How does an automatic door lock work?
An automatic door lock uses a battery-powered control board plus a small motor/actuator to move the deadbolt. When you enter a valid PIN on the keypad or send a command from your phone app, the lock verifies it, then the motor retracts or extends the bolt. “Auto-lock” typically re-engages the bolt using a timer (and on some models, door/position sensing) after the door has been unlocked.
Can I use an automatic door lock without Wi-Fi?
You can use an automatic door lock without Wi-Fi. Many locks work using Bluetooth, PIN codes, fingerprints, RFID cards, or physical keys, so you can still lock and unlock your door the usual way. However, features like remote control and real-time notifications through an app only work when the lock is connected to the internet.
How much are electronic door locks?
Electronic door locks vary widely in price. Basic keypad locks often start around $50, while advanced smart locks with Wi-Fi, fingerprint readers, or premium designs can cost $600 or more. Many well-featured models fall in the $150–$300 range. Extra costs may include professional installation or a hub needed for certain smart-home systems.
