Best Fingerprint Door Lock Under £100
Upgrade your home security with a fingerprint door lock without breaking the bank. We have analysed specs, battery life, and aggregated owner reviews to find the best models available for under £100.
Quick answer
The Yale Linus Smart Lock is the best overall for reliability and app integration, but for a dedicated fingerprint model under £100, the Lockly Secure Pro (on sale) or the affordable TappLock TL-100 offer the best balance of security and features.
Why trust ToolBuyerHub
- Tested on specs (power, torque, PSI)
- Battery & ecosystem compared
- Aggregated owner reviews
- Build quality & warranty checked
- Brand reliability
- No fake hands-on claims
Research updated June 2026.
Yale Linus Smart Lock
Best all-round smart lock with reliable app and keypad.
| Product | Best For | Key Spec | Rating | Price |
|---|---|---|---|---|
| Yale Linus Smart Lock | Best Overall | Z-Wave / Wi-Fi | 4.5 / 5 | Check Amazon |
| Lockly Secure Pro | Best Fingerprint | 3D Fingerprint + Keypad | 4.3 / 5 | Check Amazon |
| TappLock TL-100 | Best Budget | Bluetooth + Fingerprint | 4.0 / 5 | Check Amazon |
| August Wi-Fi Smart Lock | Best Retrofit | Works with existing deadbolt | 4.2 / 5 | Check Amazon |
| Ring Alarm Keypad | Best Ecosystem | Ring Alarm compatible | 4.1 / 5 | Check Amazon |
Yale Linus Smart Lock
Best OverallPros
- Reliable brand with good app
- Easy retrofit installation
- Works with existing key
Cons
- No fingerprint sensor
- Requires bridge for Wi-Fi
The Yale Linus is a retrofit smart lock that fits over your existing deadbolt, allowing you to keep your original key. It connects via Z-Wave or Wi-Fi (with the optional bridge) and offers app control, auto-lock, and guest access. Owner reviews highlight its reliability and ease of use, though it lacks a built-in fingerprint sensor.
Battery life is around 6 months with standard use, and the lock is compatible with most UK doors. It is a solid choice for those wanting a smart lock without replacing the entire mechanism, but for a fingerprint model, you will need to look at the next pick.
Lockly Secure Pro
Best FingerprintPros
- Fast 3D fingerprint sensor
- Secure keypad with scramble
- Good app with remote access
Cons
- Higher price point
- Bulky design
The Lockly Secure Pro features a 3D fingerprint sensor that is fast and accurate, along with a unique PIN keypad that shuffles numbers to prevent code theft. It connects via Bluetooth and Wi-Fi, allowing remote access and integration with smart home systems. Owner reviews praise the fingerprint recognition speed and build quality.
Battery life is rated at 6-8 months, and the lock is designed for standard UK doors. It is one of the best fingerprint models available, but it often sells for just over £100, so look for sales to get it under budget.
TappLock TL-100
Best BudgetPros
- Very affordable
- Includes fingerprint sensor
- Easy to install
Cons
- Basic app features
- No Wi-Fi option
The TappLock TL-100 is a budget-friendly fingerprint door lock that offers good value. It includes a fingerprint sensor, keypad, and Bluetooth connectivity for app control. Owner reviews note that the fingerprint sensor works well for the price, though the app is basic and lacks remote access.
Installation is straightforward, and it fits standard UK doors. Battery life is around 4 months. It is a solid choice for those on a tight budget who want fingerprint entry without smart home integration.
August Wi-Fi Smart Lock
Best RetrofitPros
- Works with existing deadbolt
- Built-in Wi-Fi
- Auto-lock feature
Cons
- No fingerprint sensor
- Can be bulky on door
The August Wi-Fi Smart Lock is a retrofit model that fits over your existing deadbolt, allowing you to keep your key. It includes built-in Wi-Fi for remote access and app control, along with auto-lock and guest access features. Owner reviews highlight its easy installation and reliable performance.
Battery life is around 3-6 months depending on usage. It does not have a fingerprint sensor, but it is a great option for those who want a smart lock without replacing the entire mechanism. It is often found under £100.
Ring Alarm Keypad
Best EcosystemPros
- Integrates with Ring Alarm
- Easy to use keypad
- Affordable
Cons
- No fingerprint sensor
- Requires Ring Alarm hub
The Ring Alarm Keypad is not a lock itself but a keypad for the Ring Alarm system. It allows you to arm/disarm your alarm with a PIN code, and it integrates with Ring smart locks. Owner reviews praise its simplicity and integration with the Ring ecosystem.
It is a good option if you already have Ring Alarm and want a keypad for access control. However, it does not include a fingerprint sensor and is not a standalone door lock. It is well under £100.
What to Check Before Buying a Fingerprint Door Lock Under £100
When shopping for a budget fingerprint door lock, consider the type of lock (retrofit vs full replacement), connectivity options (Bluetooth vs Wi-Fi), and battery life. Retrofit locks are easier to install but may lack fingerprint sensors. Full replacement locks offer better security but require more work.
Also check the door thickness and backset compatibility. Most locks fit standard UK doors (35-45mm thick) but always measure before buying. Look for models with a backup key or keypad in case the battery dies.
Mistakes to Avoid
A common mistake is buying a lock without checking if it fits your door. Measure the backset (distance from edge of door to centre of keyhole) and thickness. Another mistake is ignoring battery life; some budget locks need battery changes every 2-3 months.
Do not buy a lock without a backup entry method. If the fingerprint sensor fails or battery dies, you need a key or keypad to get in. Also avoid locks with poor app reviews; check aggregated owner feedback on Amazon.
FAQs
Are fingerprint door locks secure?
Yes, most use 3D fingerprint sensors that are difficult to fool, but they are not foolproof. Always choose a lock with a backup key or keypad.
Can I install a fingerprint lock myself?
Yes, most models are designed for DIY installation and come with instructions. You will need a screwdriver and about 30 minutes.
Do fingerprint locks work with smart home systems?
Some do, especially those with Wi-Fi or Z-Wave connectivity. Check the product specs for compatibility with Alexa, Google Home, or Ring.
How long do batteries last in a fingerprint lock?
Typically 4-8 months depending on usage and connectivity. Wi-Fi models drain faster than Bluetooth-only ones.
What happens if the battery dies?
Most locks have a backup key or a 9V battery terminal on the outside. Always keep a spare key or battery handy.
Can I use a fingerprint lock on a metal door?
Yes, but you may need a special adapter or thicker screws. Check the product description for metal door compatibility.
Are fingerprint locks better than keypad locks?
Fingerprint locks are faster and more convenient, but keypad locks are more reliable in cold weather. Many models offer both.
Do I need Wi-Fi for a fingerprint lock?
No, many work via Bluetooth only. Wi-Fi is only needed for remote access and smart home integration.
Can I share access with guests?
Yes, most apps allow you to create temporary codes or share access via the app. Check the product features for guest management.
What is the best fingerprint lock under £100?
The Lockly Secure Pro is the best if you can find it on sale, otherwise the TappLock TL-100 offers good value for the price.
Our verdict
For the best overall fingerprint door lock under £100, the Lockly Secure Pro offers the best security and features if you catch it on sale. For a reliable budget option, the TappLock TL-100 provides fingerprint access without breaking the bank. If you do not need a fingerprint sensor, the Yale Linus is the most reliable smart lock in this price range.