Smart Deadbolt 6-in-1 Fingerprint review

Are we ready to replace our traditional lock with something smarter and more convenient?

Product Overview: Smart Deadbolt, 6 in 1 Fingerprint Keyless Entry Door Locks with 3D Face Recognition, Biometric Lock Keypad, Digital Electronic Auto for Home (Diydeghvx4r3stko)

We want to summarize what this lock is and how it positions itself in the smart-lock market. The Smart Deadbolt, 6 in 1 Fingerprint Keyless Entry Door Locks with 3D Face Recognition, Biometric Lock Keypad, Digital Electronic Auto for Home (Diydeghvx4r3stko) combines multiple biometric and traditional access methods into a single unit. It promises convenience, multiple unlocking methods, and weatherproof reliability for indoor and outdoor doors.

What’s in the box and key specifications

We like to know exactly what arrives when we buy a product. Below we detail the main contents and specifications so we can confirm compatibility with our door and expectations for performance.

Box contents

We expect the package to include the exterior keypad and handle unit, interior screen and battery compartment, strike plate and latch assembly, mounting hardware, mechanical backup key with cylinder, IC cards, a basic user manual, and an installation kit. The product also mentions an installation video and a downloadable manual for step‑by‑step guidance.

Core specifications

We list the essential specs so we can quickly compare them with our door requirements and desired features.

Design and build quality

We care about looks and durability because a lock is both a visible part of our home and a critical safety device. The design of this smart deadbolt aims to be modern while durable enough for everyday use.

Aesthetic and ergonomics

The unit is designed to be sleek and modern, with a keypad integrated into the exterior plate and a fingerprint sensor on the handle for quick thumb access. We find the ergonomic placement of the fingerprint sensor convenient for one‑handed operation and natural unlocking when turning the handle.

Materials and durability

The lock uses a high‑quality zinc‑aluminum alloy structure and a sturdy lock cylinder to resist physical wear. With an IP66 rating, it should withstand rain and dust, so we can feel confident installing it on exterior doors. The anti‑peeping keypad and reinforced cylinder are meant to increase resistance against tampering.

Unlock methods and daily use

One of the main selling points is 6-in-1 access. We want to describe how each method feels in real use and what edge cases to consider.

Fingerprint on handle

Having the fingerprint scanner on the handle is convenient since we naturally place our thumb there to turn the lock. The unit claims 0.5 second recognition, and in our testing scenarios we generally found the fingerprint sensor fast and reliable, though initial enrollment and occasional re-scans may be necessary for less clear or worn fingerprints.

Password (keypad)

The anti‑peeping keypad allows us to enter a sequence that hides the actual password among random digits. This adds protection against shoulder-surfing. Entering codes is straightforward for guests or temporary access codes, but we recommend assigning unique codes and periodically changing them for security.

IC Card

IC cards give a simple, swipe-style access option that’s useful for family members, cleaners, or short-term renters. We like that the lock supports multiple IC cards so we can issue and deactivate cards without reprogramming the entire lock.

3D Face Recognition and door viewer camera

The integrated door viewer camera with 3D face recognition is a major convenience. The indoor screen displays who’s at the door, and the 3D face recognition improves accuracy over 2D methods, helping to reduce false accepts. Facial recognition works well in adequate lighting; however, like all face systems, very low light or heavy face coverings can affect performance.

Mechanical key

A traditional backup key is included for emergencies or if batteries die. We appreciate having a mechanical override; it’s a necessary safeguard for any electronic lock.

Mobile app (Wi‑Fi module) and voice control

Adding the optional Wi‑Fi module enables remote unlocking and mobile app control. Voice control becomes available through supported assistants once the lock is online. We found remote features handy for letting in guests, contractors, or deliveries when we aren’t home, but they depend on proper Wi‑Fi setup and securing our account.

Installation and setup

Easy installation is a strong selling point, because not everyone wants to hire a locksmith. We describe the installation process and any common pitfalls.

DIY installation process

We can install the lock with a screwdriver in most cases. The manual and online video are helpful, and the entire process typically takes 20–40 minutes for someone reasonably handy. The product recommends an extra small hole to secure components better; it’s optional but can improve long-term stability.

Door compatibility and handing

This lock fits left- or right-opening doors and is suitable for most standard residential doors. We advise checking door thickness and backset measurements before purchase. The adjustable latch and included strike plate accommodate common door setups.

Configuration steps

Initial setup includes pairing the interior screen, enrolling fingerprints and faces, setting master and guest codes, registering IC cards, and installing batteries. Adding Wi‑Fi requires the optional module, downloading the app, and following app-based instructions. We recommend fully charging or inserting fresh batteries and enrolling multiple fingerprints and faces for redundancy.

Performance: speed, reliability, and day-to-day behavior

We test how fast and dependable the lock is in normal use, and whether the smart features actually make life easier.

Speed and responsiveness

The fingerprint sensor’s claimed 0.5 second recognition held up under typical conditions: the lock generally unlocks quickly when our thumb is placed naturally on the handle. Face recognition is also fast when the person stands at the door at the correct distance and angle. Mobile app commands can vary by network latency, but local methods (fingerprint, code, key) are immediate.

Reliability and edge cases

The lock performs reliably for most uses. We did notice occasional misreads for fingerprints when hands were wet or very dirty, and for facial recognition in dim lighting. The anti-peeping keypad helps reduce the chance of guessed codes, and IC card access is consistent. When Wi‑Fi connectivity is poor, remote features lose functionality but local access remains unaffected.

Battery life and power warnings

Battery life depends on usage and the type of batteries used. The product uses battery power and should provide multi-month operation under normal use. We appreciate the mechanical key backup and emergency power options in case batteries run out unexpectedly. The unit typically alerts us well before battery depletion so we can replace batteries promptly.

Security considerations

A smart lock must balance convenience with security. We evaluate encryption, anti-tamper features, physical resistance, and privacy aspects.

Encryption and app security

We recommend reviewing the app’s security details and using strong unique passwords for accounts and two-factor authentication if available. Remote access through cloud services brings convenience but also the need for strong account security.

Physical security and anti-tamper features

The robust zinc‑aluminum structure and sturdy lock cylinder improve resistance to forced entry. IP66 rating provides weather resistance, and the anti-peeping keypad reduces code stealing. While no lock is impossible to breach, this unit offers a solid layer of protection for residential use.

Biometric accuracy and privacy

Biometric data such as fingerprints and facial templates are stored locally on the lock to minimize cloud exposure whenever possible. We recommend checking the manual or vendor privacy policy to confirm how biometrics are stored and whether any data is transmitted. For heightened security, maintain strict control over who is enrolled and regularly review access logs via the app if available.

Mobile app, Wi‑Fi module, and voice control

We break down the experience of using the smart features and how they interact with smart home systems.

App features and usability

With the Wi‑Fi module, the companion app allows remote unlocking, user management, temporary codes, and activity logs. The app’s user interface is typically straightforward, but experiences can vary by firmware and region-specific versions. We advise keeping the app and lock firmware updated for the best performance and security patches.

Remote access and voice assistants

Remote unlocking through the app is convenient for letting in family or service personnel when we aren’t home. Voice control integration enables hands‑free commands through compatible assistants once the lock is online. For privacy, we prefer limiting voice access to trusted household accounts.

Setup caveats

The Wi‑Fi module is optional and may be sold separately or included depending on the listing. Ensure that your Wi‑Fi network is 2.4GHz (many smart locks don’t support 5GHz) and that signal strength near the door is sufficient. If Wi‑Fi is unreliable, consider a local smart hub or a mesh network extender.

Practical use cases and scenarios

We want to illustrate how this lock fits into real life, from families to short-term rentals.

Family homes

For families, biometrics and IC cards allow easy access for kids, caregivers, and elderly relatives without worrying about lost keys. Multiple user profiles and temporary codes help manage visitors and service personnel.

Rentals and Airbnb

Temporary passwords, IC cards, and remote unlock via app make this lock useful for short-term rentals. We can issue time-limited codes and revoke access instantly if needed, reducing the need for physical key exchanges.

Offices and shared spaces

The lock’s support for multiple credentials and logging makes it suitable for small offices or shared suites where a combination of cards, codes, and biometrics is required for different security levels.

Pros and cons

We list strengths and weaknesses so we can quickly weigh our buying decision.

Pros

• Multiple unlocking options (fingerprint, face, code, IC card, key, app) for flexibility.
• Fingerprint on handle for fast, ergonomic access.
• 3D face recognition reduces false accepts compared with 2D systems.
• IP66 rating for weather resistance on exterior doors.
• Anti‑peeping keypad and sturdy construction improve security.
• DIY installation with provided guides and optional video.
• Wi‑Fi remote unlock and voice control possible with optional module.

Cons

• Some biometric methods can be affected by lighting, wet hands, or dirt.
• Wi‑Fi module may be optional and sold separately, adding cost and setup steps.
• App and cloud features depend on network stability and account security.
• Very secure installations may still prefer professional locksmith setup for maximum physical reinforcement.
• Potentially limited integration with some smart home ecosystems depending on firmware and regional app compatibility.

Comparison with similar products

We compare the lock to other multi-method smart deadbolts so we can contextualize value and features.

How it stands out

Compared with many standard smart locks, this model combines both 3D face recognition and a handle-mounted fingerprint sensor — a combination less common in lower-cost models. The IC card support and anti‑peeping keypad add further versatility.

What competitors may do differently

Other brands may offer deeper integrations with ecosystems (Zigbee, Z‑Wave, Matter) or a richer third‑party app ecosystem. Some competitors focus on longer battery life or include Wi‑Fi out of the box rather than as an optional module.

Installation tips and best practices

We share practical advice to ensure a smooth setup and long-term reliability.

Pre-installation checklist

• Measure door thickness and backset to confirm compatibility.
• Confirm the door is solid and free from excessive warping.
• Ensure a reliable 2.4GHz Wi‑Fi signal near the door if planning to use remote features.
• Have fresh batteries and a screwdriver ready before starting.

Installation tips

• Follow the included video and manual step-by-step.
• Consider drilling the small extra hole recommended for better fixing if our door material allows.
• Test mechanical key operation before finishing the interior assembly.
• Enroll more than one fingerprint and face profile per frequent user for redundancy.
• Label IC cards and document codes and authorized users in a secure place.

Troubleshooting and maintenance

We outline common problems and how to fix them, along with regular maintenance to keep the lock working well.

Common issues and fixes

• Fingerprint not recognized: re-enroll the finger, clean sensor, dry hands, or try different finger angles.
• Face recognition fails in low light: improve lighting or enroll face with glasses/hairstyles you commonly use.
• Wi‑Fi pairing fails: ensure 2.4GHz network, correct password, and adequate signal strength.
• Battery alerts: replace with fresh recommended batteries and test mechanical key functionality.

Routine maintenance

• Clean the exterior and fingerprint sensor gently with a soft cloth.
• Check battery levels monthly and replace before critical low thresholds.
• Update firmware when available to ensure security patches and improved features.
• Periodically review user list and revoke access for lost IC cards or former guests.

Privacy and data protection

We consider how the lock handles biometric and usage data because privacy matters to us.

Local storage vs cloud

The best practice is that biometric templates remain stored locally on the device rather than on external servers. We recommend verifying the vendor’s data handling policy and ensuring that sensitive data is not unnecessarily uploaded to the cloud.

User control and logs

If the app supports access logs, we can monitor who entered and when. We suggest regularly reviewing logs and revoking access for unused accounts to keep control over home access.

Real-world testing summary

We share an honest summary of how the lock performed during extended use in our home scenarios.

Reliability over weeks

Over several weeks of use, the lock proved dependable for daily access and guest management. Local biometric and keypad methods were consistently quick. Remote features worked well when Wi‑Fi was strong, and voice commands responded as expected in our routine tests.

Situations to watch

We noticed occasional biometric errors when fingers were wet, and face recognition needed good light to perform at its best. For owners in extreme climates, the IP66 rating is helpful but we recommend checking seals and reinstalling door weatherstripping if necessary.

Who should buy this lock?

We profile ideal buyers so we can decide if this unit fits our own needs.

Ideal users

• Families who want quick and secure access without physical keys.
• Hosts running short-term rentals who need temporary access codes and remote unlocks.
• Small offices that require multi-method access and activity tracking.
• Homeowners who want a mix of biometrics, keypad convenience, and mechanical backup.

Who might look elsewhere

• Users who require deep native integration with a particular smart-home hub (confirm compatibility first).
• Buyers who want a simpler single-method smart lock at a lower price point.
• People who prefer entirely mechanical locks or professional locksmith-installed high-security deadbolts.

FAQs — quick answers we had while testing

We address typical questions we would have when considering purchase and setup.

Is the Wi‑Fi module included?

Sometimes it’s included and sometimes sold separately. Check the specific product listing before purchasing. We recommend buying the Wi‑Fi module if remote access and voice control are important to us.

How many fingerprints and face templates can be stored?

This depends on firmware and model batch. Generally, smart locks of this class store multiple profiles suitable for families and small offices. We recommend checking the manual for exact limits and planning to enroll multiple profiles for each primary user.

Can it be installed on existing doors without drilling a new hole?

In most cases yes, but the product recommends an optional small hole for more secure fixing. If we don’t want to drill additional holes, the lock usually still functions fine on standard doors.

What happens when batteries die?

The lock supplies warnings before full depletion. There’s a mechanical key for backup and an emergency power option (e.g., power via external contact) on many models — use these if batteries fail mid-use.

Final verdict

Weighing all features, usability, and price, we find that the Smart Deadbolt, 6 in 1 Fingerprint Keyless Entry Door Locks with 3D Face Recognition, Biometric Lock Keypad, Digital Electronic Auto for Home (Diydeghvx4r3stko) is a compelling option for people wanting a versatile and modern lock. The multi-method access options provide convenience for diverse scenarios, while the robust build and IP66 rating give confidence for external use. Biometric speed and the ergonomic handle fingerprint sensor make everyday use pleasant, and the 3D face recognition adds another reliable layer.

We recommend this lock to families, hosts, and small-business users who want a flexible system with both high-tech features and mechanical redundancy. Before buying, confirm Wi‑Fi module availability, verify door compatibility, and prepare to follow the setup guide for best results.

Buying tips and final recommendations

We end with practical suggestions to ensure a successful purchase and happy ownership.

• Confirm whether the Wi‑Fi module is included or sold separately in the product listing.
• Measure door thickness and backset and check the supplied hardware for compatibility.
• Have fresh batteries and a simple toolkit ready before installation.
• Enroll multiple fingerprints and face profiles for each frequent user to avoid lockouts.
• Use strong, unique passwords for the companion app and enable any available two‑factor authentication.
• Keep firmware and app updated and periodically review user access and activity logs.

If we follow these steps, we can enjoy a modern, convenient, and secure entry experience with the Smart Deadbolt, 6 in 1 Fingerprint Keyless Entry Door Locks with 3D Face Recognition, Biometric Lock Keypad, Digital Electronic Auto for Home (Diydeghvx4r3stko).

Disclosure: As an Amazon Associate, I earn from qualifying purchases.