Smart door locks have become one of the most popular upgrades for modern homes. In 2025, they will no longer be considered a luxury but an essential part of smart home systems. They offer not only enhanced security but also unmatched convenience. The ability to lock and unlock doors using smartphones, Apple Watches, or voice commands is transforming how families, landlords, and businesses manage access. With so many models available, choosing the best smart door lock requires careful consideration of features such as battery life, auto lock, app control, and compatibility with existing locks.

Why Smart Door Locks Are Essential in 2025

The demand for smart locks has grown rapidly because of lifestyle changes, increased security concerns, and the growth of smart home technology. Traditional locks are reliable but limited. In contrast, the best smart locks combine digital features with robust security. Most smart locks support multiple access methods, including fingerprint readers, remote access via apps, and Apple Home Key integration for iPhone and Apple Watch users.

Smart locks also make everyday life easier. Parents can give children access without needing spare keys. Airbnb hosts can generate digital codes for guests. Delivery drivers can be granted secure temporary access to leave parcels safely indoors. Remote workers can manage their homes more flexibly, checking if doors are locked even when travelling.

Security is equally important. Smart locks in 2025 are tested against rigorous standards by organisations such as the Builders Hardware Manufacturers Association. They use encryption and tamper alerts to protect against hacking. Many models keep access logs, showing exactly who unlocked the door and when.

In short, smart locks have moved beyond being gadgets. They are vital components of modern security, offering peace of mind, flexibility, and advanced smart home integration.

How Smart Door Locks Work

Smart locks blend traditional locking mechanisms with modern electronics. At the core, they still use a deadbolt or latch. What makes them smart is their connectivity. Some models use Wi-Fi to connect to your home network, allowing remote access. Others rely on Bluetooth, unlocking automatically when your phone or smartwatch is nearby. A few advanced systems use Zigbee or Z-Wave to connect with professional smart home hubs.

There are two main categories: retrofit locks and deadbolt replacements. Retrofit smart locks fit over your existing deadbolt, so you can continue using your physical keys. They are easy to install and popular with renters. Deadbolt replacements require swapping out the entire lock but usually provide the most advanced features, such as built-in Wi-Fi, video integration, and Apple Home Key support.

Key features include app control for locking and unlocking remotely, an auto lock for automatic security, and battery power lasting six months to a year. Many smart locks also include backup entry options such as keypads, fingerprint scanners, or physical keys to prevent lockouts.

In practice, smart locks work as part of a larger ecosystem. You can link them with security cameras, video doorbells, and lighting systems. For example, unlocking your front door could trigger your hallway lights and disarm your alarm system. This integration makes smart locks a central part of modern smart homes.

Key Features to Look for in the Best Smart Locks

When choosing a smart lock in 2025, it is important to consider several key features:

Battery life: The best smart locks last six months to a year on one set of batteries.
Auto lock: This feature secures your door automatically after it is closed.
App control: Apps allow you to lock and unlock doors remotely, share access, and monitor activity logs.
Fingerprint scanner: Biometric entry is fast, secure, and convenient.
Voice commands: Integration with Alexa, Google Home, and Siri enables hands-free control.
Apple Home Key: Premium smart locks now support unlocking with iPhones and Apple Watches.
Installation type: Retrofit locks are easier to install, while full replacements offer more advanced features.
Compatibility: Ensure the lock works with your existing smart home devices, such as cameras and alarms.

By focusing on these features, homeowners can select the best smart lock for their needs, balancing security, convenience, and affordability.

The Top 7 Smart Door Locks in 2025

1. Yale Assure Lock 2

The Yale Assure Lock 2 is one of the most advanced and versatile smart locks available. It supports Apple Home Key, integrates with the Yale Access App, and is compatible with Alexa and Google Home. It features auto lock, remote access, and a sleek design that fits most doors. Yale’s reputation for quality makes this lock a trusted choice for homeowners looking for both security and modern technology.

2. August Smart Lock (4th Gen)

The August Smart Lock remains one of the best retrofit smart locks. It fits onto your existing deadbolt, allowing you to keep your physical keys. It includes built-in Wi-Fi, enabling remote access through the August app. You can share digital keys with family or visitors, and the lock is compatible with Alexa, Google Home, and Apple Home. Its simple installation and reliable performance make it a favourite.

3. Schlage Encode Plus

The Schlage Encode Plus is a full deadbolt replacement that combines strength with intelligence. It is certified by the Builders Hardware Manufacturers Association and features built-in Wi-Fi. It supports Apple Home Key, allowing iPhone and Apple Watch users to unlock instantly. With a strong reputation for durability, it is an ideal choice for those who want a reliable, secure smart lock.

4. Aqara Smart Lock U100

The Aqara Smart Lock U100 is an affordable yet feature-rich option. It offers fingerprint scanning, keypad access, and app control. It integrates with Apple Home, Alexa, and Google Home, making it versatile for different households. Its affordability makes it one of the best choices for families who want the convenience of a smart lock without paying premium prices.

5. Yale Approach Lock with Wi-Fi

The Yale Approach Lock offers a slim, modern design and connects via Wi-Fi. It works with the Yale Access App, providing remote access, notifications, and auto lock. Although it does not support Apple Home Key, it is a stylish option with reliable functionality and easy installation.

6. Level Lock+

The Level Lock+ is one of the most discreet smart locks available. It replaces the internal mechanism of your existing lock, making it invisible from the outside. It supports Apple Home Key and works seamlessly with iPhone and Apple Watch. While it is one of the most expensive smart locks, its design and premium features make it popular with those seeking a sleek, high-tech option.

7. Eufy Security Smart Lock C210

The Eufy C210 is a budget-friendly option with excellent features. It includes a fingerprint reader, keypad, app control, and auto lock. It also supports Wi-Fi integration. This lock is ideal for households that want reliable smart lock features without high costs.

Comparing the Top Smart Lock Features

Smart Lock Model	Installation Type	Apple Home Key	Fingerprint Scanner	Wi-Fi Built-In	Price Range
Yale Assure Lock 2	Deadbolt Replacement	Yes	No	Optional	Mid
August Smart Lock (4th Gen)	Retrofit	No	No	Yes	Mid
Schlage Encode Plus	Deadbolt Replacement	Yes	No	Yes	High
Aqara Smart Lock U100	Deadbolt Replacement	Yes	Yes	No	Affordable
Yale Approach Lock	Deadbolt Replacement	No	No	Yes	Mid
Level Lock+	Invisible Retrofit	Yes	No	Yes	High
Eufy Security C210	Deadbolt Replacement	No	Yes	Yes	Affordable

Benefits of Installing a Smart Lock

Smart locks offer several benefits beyond basic security. They provide convenience by eliminating the need for physical keys. Remote access ensures you can manage entry even when away from home. They integrate with smart home devices, allowing automation such as lights turning on when the door unlocks. Smart locks also allow sharing of digital keys, perfect for families or rental properties. Activity logs give you visibility of who has entered and when, increasing peace of mind.

Challenges and Considerations Before Buying

Despite their advantages, smart locks have some challenges. Cost can be higher than traditional locks, with some premium models being expensive. Compatibility is another factor, as not all locks work with every smart home platform. Battery life requires attention, as most smart locks need replacement batteries every six to twelve months. Wi-Fi reliability can affect performance. Finally, homeowners should check that the lock is certified and tested against security standards.

Integration with Other Smart Home Devices

Smart locks are most powerful when combined with other devices. They can work with Alexa, Google Home, and Apple Home for voice control. They integrate with smart lighting, alarms, and cameras to create complete home automation. Apple users benefit from Apple Home Key, while Android users can unlock via apps or voice assistants. With proper integration, smart locks become part of a fully secure and automated household.

FAQs

Yes, many models, such as the August Smart Lock, allow you to keep using your existing keys.
Most smart locks last between six months and a year before needing new batteries.
Most models fit standard UK and EU doors, but some require specific deadbolt replacements.
Popular models such as the Yale Assure Lock 2, Schlage Encode Plus, and Level Lock+ support Apple Home Key.
Smart lock companies use strong encryption and protocols to minimise hacking risks. Keeping firmware updated is essential.
Most smart locks still allow entry through Bluetooth, fingerprint scanners, or physical keys.

Conclusion

Smart door locks in 2025 are more secure, advanced, and convenient than ever. From affordable options like the Eufy C210 to premium models like the Level Lock+, there is a smart lock for every budget and lifestyle. They integrate seamlessly with smart home devices, support features such as auto lock and app control, and provide peace of mind for families and businesses.

For professional installation and expert advice, contactCambs Lock & Safe, your trusted specialists in the UK for smart lock systems.

Top 7 Smart Door Locks in 2025