Fingerprint Door Lock Smart Fingerprint Door Knob - Keyless Security

In this review of the Fingerprint Door Lock smart door knob, the bottom line is clear: this is a practical, mix-and-match security option for homeowners who want fast, keyless entry without rewiring or complex installation. The lock combines a fingerprint sensor, smartphone app control, and a backup physical key to suit bedroom doors, apartments, or garage entries. It is best for users who value quick thumbprint access and simple setup, while those needing cloud or native Wi-Fi control should note an extra gateway is required.

Key Features

• 3-in-1 access: Offers thumbprint, Bluetooth app control, and traditional key entry so users have multiple reliable ways to unlock the door.
• Three operation modes: Passage, entrance, and privacy modes are selectable by rotating the knob, giving easy control over locking behavior for bedrooms or shared spaces.
• Fast fingerprint recognition: The sensor claims 0.1 second recognition and can store up to 20 fingerprints, enabling quick, personalized access for household members.
• Local data storage: Fingerprints are stored locally on the device rather than uploaded, which supports greater privacy for family use.
• Rechargeable battery: Built-in 400mAh battery charges in about 3 hours and includes a visual power display and low-battery alarm for predictable maintenance.
• App management: The companion app (Bluetooth range only) allows fingerprint management, temporary guest access, and unlock logs for simple oversight.

Who It's For

The Fingerprint Door Lock is ideal for apartment renters, homeowners upgrading interior doors, and hosts managing short-term stays who want quick, keyless access and the security of a fingerprint sensor. Its simple screwdriver installation and compatibility with most US doors make it a straightforward replacement for standard knobs on bedrooms, living rooms, or garage entries.

It is less suitable for users who require native Wi-Fi control out of the box or those who need enterprise-grade reliability; a separately purchased gateway is needed for remote Wi-Fi access, and some customers report inconsistent fingerprint performance in occasional use cases.

Pros & Cons

Pros

• Easy installation with common tools and fits most US doors for a fast upgrade.
• Multiple access methods provide flexibility and a backup physical key in case of issues.
• Stored fingerprints and auto-locking improve privacy and security for bedrooms and shared living spaces.
• Rechargeable battery with visual indicator avoids frequent battery swaps.

Cons

• Fingerprint recognition has mixed reports; some users experience inconsistent unlocking performance.
• App control works only within Bluetooth range unless a separate gateway is purchased for Wi-Fi access.

Specifications

Product type	Smart fingerprint door knob with lock
Access methods	Thumbprint, Bluetooth app, physical key
Fingerprint capacity	Stores up to 20 fingerprints
Recognition speed	Approximated 0.1 second
Battery	Built-in 400mAh rechargeable, ~3 hour charge
Auto lock	5 second auto-lock feature
Installation	Fits most US doors; screwdriver required

Our Verdict

For homeowners and renters who want a simple, stylish upgrade to keyless entry, this smart fingerprint knob delivers core value: quick thumbprint access, multiple unlocking options, and local data privacy. It is good value when you need convenient bedroom or apartment security without rewiring, but expect to add a gateway for true remote Wi-Fi control and be mindful that fingerprint performance can vary in some real-world cases.

Frequently Asked Questions

Does the lock need batteries?
The lock uses a built-in 400mAh rechargeable battery with a visual power display and low-battery alarm; it does not use removable batteries.

Can I control the lock from anywhere?
App control works within Bluetooth range; remote Wi-Fi control requires a separately purchased gateway.

How many fingerprints can be stored?
The knob can store up to 20 fingerprints for family members and guests.