Fingerprint Door Lock Smart Fingerprint Door Knob - Keyless Thumbprint

Our review of the Fingerprint Door Lock finds it best suited to homeowners or renters who want a compact, keyless solution for interior doors and small exterior doors where Bluetooth control is acceptable. The single biggest reason to consider it is its 3-in-1 unlocking options: fast thumbprint access, traditional keys for backup, and an app for management within Bluetooth range, which together offer flexibility for bedrooms, apartments, and shared living spaces.

Key Features

• 3-in-1 access: Combines thumbprint, app control, and mechanical keys so users can choose the most convenient or secure method in any situation.
• Three operating modes: Passage, entrance, and privacy modes are switched by rotating the knob, letting you quickly set the door for free passage or locked privacy.
• Fast fingerprint recognition: The sensor claims recognition in about 0.1 seconds and stores up to 20 fingerprints for multi-user households.
• Local data storage: Fingerprints are stored on the device rather than uploaded, which reduces cloud exposure and keeps biometric data local.
• Rechargeable battery: Built-in 400mAh battery recharges in about 3 hours and the visual power display plus low-battery alarm helps avoid unexpected power loss.
• App management: Bluetooth app lets you add or remove fingerprints, view unlocking records, and grant temporary access while in range.

Who It's For

This knob is a practical option for apartment dwellers, roommates, and homeowners who want a compact, modern door lock for bedrooms, offices, or secondary exterior doors where Wi-Fi is not required. The combination of biometric, key, and app access makes it useful for shared spaces and short-term guest access managed from a phone.

It is not ideal for users who need remote Wi-Fi control out of the box or for primary entry doors where full-time networked monitoring is required; a separate gateway is needed for Wi-Fi. Also, those who need industrial-grade or high-frequency commercial use should consider a heavier-duty lock.

Pros & Cons

Pros

• Easy installation with common tools and fits most US doors for a quick upgrade.
• Multiple access methods provide redundancy and convenience for families or guests.
• Local fingerprint storage and a fast sensor offer a good balance of speed and privacy.

Cons

• Some users report mixed reliability of fingerprint recognition and occasional unlock failures, so performance can vary by user and environment.
• Bluetooth-only app control by default means no remote Wi-Fi access unless a separate gateway is purchased.

Specifications

Our Verdict

The Fingerprint Door Lock is a sensible value for anyone who wants a compact, feature-rich keyless knob for bedrooms, apartments, or secondary doors. It combines quick biometric access, app-based management in Bluetooth range, and mechanical key backup, making it a flexible and private solution, provided you accept occasional variability in fingerprint performance and the lack of built-in Wi-Fi.

Frequently Asked Questions

Can the lock be controlled remotely over Wi-Fi?
Not by default; app control works within Bluetooth range and Wi-Fi requires a separately purchased gateway.

How long does the battery last and is it replaceable?
The built-in 400mAh battery charges in about 3 hours and can last up to a year depending on use; the battery is not removable.

How many fingerprints can be stored?
The lock stores up to 20 fingerprints, suitable for families and small shared living situations.