HARFO Keypad & Fingerprint Keyless Entry Door Locking Mechanism

Last updated date: December 6, 2021

DWYM Score

8.7

HARFO Keypad & Fingerprint Keyless Entry Door Locking Mechanism

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We looked at the top Door Locking Mechanisms and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Door Locking Mechanism you should buy.

Update as January 6, 2022:
Checkout The Best Door Locking Mechanisms for a detailed review of all the top door locking mechanisms.

Overall Take


In our analysis of 15 expert reviews, the HARFO Keypad & Fingerprint Keyless Entry Door Locking Mechanism placed 6th when we looked at the top 6 products in the category. For the full ranking, see below.

From The Manufacturer

HARFO Smart Door Lock Door thickness range: 1 3/8 inch to 2 3/16 inch 35mm-55mm thick. OLED DISPLAY + VOICE GUIDE will walk you through the whole process. You can simply use the touchscreen to add or delete user on the device. This keyless door lock needs 4pcs 1.5V AA dry batteries (No include). Rechargeable batteries are not recommended, because most rechargeable battery's voltage is 1.2V. ALL-IN-1 FLEXIBILITY keyless entry door lock, fingerprint +access card(3 include) + code(4~12 digit) + backup key + double verification to unlock. Up to 300 users max and allow owner to track entry record. NEW 3D FINGERPRINT SENSOR digital door lock bring you a fast & best secure fingerprint recognition system. Accuracy up to 99.86%. Works perfect for kids and the elder. DEADBOLT BUTTON can only allow admin users to access. This front door lock's function can increase your privacy level significantly.

Expert Reviews

Expert Summarized Score

9.0
6 expert reviews

User Summarized Score

9.0
1,627 user reviews

What experts liked

Easy to use and maintain, simply follow along with the included voice guide to operate this device. Access with fingerprint, card, or code.
- BestReviews
Highly durable and sturdy. Easy to set up and program. The fingerprint sensor is highly accurate.
- Electronics Hub
Double verification to open the lock allows you to ensure high-security. Multiple unlocking option according to your convenience. Reversible handles allow the lock to be installed on all types of single latch doors.
- Lock Safeguard
Long battery life. Solid structure. Easy to change batteries. Well performing keypad and fingerprint reader. Voice guide. Total of 291 fingerprint, code and access control memory. Unlock with fingerprint, keypad, access cards or keys. User tracking over OLED screen. One time usage code. Easy to change batteries. MicroUSB port entrance for backup.
- All Smart Locks
Can program up to 300 users. Includes fingerprint scan and hidden keyhole. Reversible for any door. Can leave locked or unlocked from the inside.
- Bob Vila
This is another smart front door lock that really leans into the security features by having double methods to unlock and a full 3D fingerprint scanner. Clean design that looks great in modern homes or apartments. Built to withstand a lot of wear and tear from normal usage.
- My Home Dojo

What experts didn't like

Not as waterproof as other models, so may require an additional layer of coverage.
- BestReviews
No mobile app support.
- Electronics Hub
Not waterproof.
- Lock Safeguard
No smart hub connection options. No Wi-Fi. No scheduled or recurrings user codes. Brightness of the keypad is not good under day light.
- All Smart Locks
Fingerprint sensor is finicky.
- Bob Vila
Even with the voice assistant, it can take a few times to nail the programming features. The biometric fingerprint scanner will not work correctly if your hands are dirty or sweaty. This is not a waterproof lock and shouldn’t be used in outdoor settings.
- My Home Dojo

An Overview On Door Locking Mechanisms

Homeowners have more options than ever when it comes to locks. You can choose digital locks that let you leave home without a key and deadbolts that can withstand up to 800 pounds of force. There are also sliding door locks you can install on outbuildings or interior rooms and plates that will keep your existing deadbolt in place, preventing children from unlocking doors while you aren’t looking.

The first question to consider is whether or not you need another door-locking mechanism — and if so, where? Even if your hometown is the very picture of small-town America, a lock can give you peace of mind. And if you own a home in a higher-trafficked area, such as a big city or even a suburb close to one, your safety might be a real concern that can be alleviated by a simple purchase.

You then need to decide where a better lock would come in handy and what your needs are (for example, which way does your door swing? Does the existing hardware present any problems for switching locks out?). You’ll also have to think about what kind of functions and footprint you want your locking mechanism to have and whether you need the lock to use the same key as other locks in your home. You may also want to consider what kind of style and finish you want.

If you rent, things can be a little more complicated. Your landlord should have installed at least a standard deadbolt before you moved in, but those deadbolts might leave something to be desired. Before you pull out the screwdriver or drill, check your lease. You may be prohibited from doing any work on your rental that can leave a mark, including installing locks. Whether your rental agreement permits it or not, though, running this project by your landlord is always a good idea — especially if it’s something that you’ll leave behind when you move out.

The most common type of exterior deadbolt has a single cylinder. This type only locks on one side, so when you aren’t home, you won’t have your deadbolt in place. Single-cylinder locks are often installed on apartment doors to provide the minimum extra security necessary to residents. They can work fine if you just want a little extra protection.

A double-cylinder deadbolt lock, however, gives you an extra layer of security by providing a lock outside as well as the inside. Simply insert the key and your home will be secured even when no one’s on the other side of the door to activate the lock. The downside of a double-cylinder lock, which requires the use of a key on both sides, is that it makes it harder to leave the home in a hurry or when you’re somehow incapacitated. In fact, you may have to check the legality of double-cylinder locks in your local area, as they may be prohibited by certain fire codes.

The Door Locking Mechanism Buying Guide

  • Locks are rated according to standards set by Builders Hardware Manufacturers Association. The top rating is BHMA A, with B being second and C being third. Locks are rated separately for security, durability and finish, with the certification affixed to the packaging of each lock using a label.
  • Shop for sturdy locks designed to withstand tampering of the hardware (via tools) as well as brute force.
  • Consider whether you need something tamperproof on the inside of the door. For example, do you need your lock to be childproof? If so, you could install a plate to lock your deadbolt into place. You could also place it higher so only adults can reach it.
  • If you already have a deadbolt, look at how it’s installed to determine whether or not it easy it might be to replace. You may want to choose a similar locking mechanism to ensure a proper fit.
  • The finish of the lock helps it look nice, but also impacts its durability. Brushed nickel over a stainless-steel base can ensure your lock gives you years of reliable use. It’s especially important to look for a rust-resistant option for outside door locks since they’ll be exposed to moisture year-round.
  • A keyless lock can be convenient since it eliminates the need to dig your keys out every time you return home. You will also be able to issue codes to visitors like service providers or family members. You can easily change the codes if you ever want to restrict access to someone who had it before.