ThorBolt G1 Fingerprint Door Knob Lock Review

The ThorBolt G1 Fingerprint Door Knob Lock is worth buying if you want keyless entry on an interior door, not your front entry. It holds 50 fingerprints and 100 passcodes, runs a year on 4 AAA batteries, and ships with two mechanical backup keys. Buy it for bedrooms, offices, garages and pantries.

How this review was made: written from my own video review of this product. Every opinion here is my own, from using it myself.

The Sensor Sits On Top, And That’s The Smart Part

The ThorBolt G1 puts the illuminated sensor on top of the knob, right where your finger already lands when you grab it, instead of burying it in the face like most budget competitors do. No thumb-curling, no repositioning your grip, no missed reads because you approached from a slightly wrong angle. That one placement decision is why this reads as a grown-up product instead of a gadget. I show the grab-and-go motion in the video so you can see exactly what I mean.

Behind it there’s a self-learning algorithm that keeps refining each stored print the more you use it. And the front panel is a matte touch keypad that lights up on tap. Fifty fingerprints is far more than one family needs, which is the point: you register every finger you’d plausibly use, on both hands, and it stops mattering which one you present.

Where This Fingerprint Door Knob Doesn’t Belong

This is an interior knob, full stop. ThorBolt positions it for bedrooms, offices, apartments and other interior spaces, and that’s the right call, because a knob lock offers meaningfully less resistance to forced entry than a deadbolt regardless of brand. If exterior security is what you’re after, you’re in the wrong product category entirely.

The other real catch is batteries. It takes 4 AAA alkalines and they’re not in the box, so order some alongside it or your install stalls at the last step. Annoying, and worth knowing before the package lands on your porch.

There’s also the toggle switch on the side. Slide it left and the door stays in passage mode permanently, which disables the fingerprint sensor and the keypad entirely. Great for a pantry you prop open during the day. Also a very easy way to confuse someone in the house who doesn’t know the switch exists and now thinks the fingerprint door lock broke.

And if the batteries do die with the door locked? Two mechanical keys ship in the box, or you plug a power bank into the Type-C port on the bottom. Two outs. That’s the part cheaper locks skip.

How It Stacks Up In A Crowded Category

The G1 stands out in a crowded budget tier because it includes three features cheaper locks drop: a backup mechanical key, a Type-C emergency power port, and 100 separate passcodes. What separates them is usually what’s missing: no backup key, no emergency power port, a keypad that only takes one code. The G1 carries all three of those, plus 100 separate passcodes, which is how you give a houseguest or a cleaner their own code and delete it later.

Sales data backs up that it’s landing with buyers. It currently sits around #8,971 in Tools & Home Improvement, up from a 90-day average near #10,450, and Amazon reports more than 500 bought in the last month. Pricing has been steady over the past three months, so there’s no obvious reason to sit and wait for a dip. Check the current price here.

What it doesn’t do is connect. No app, no hub, no phone unlock. For a bedroom or pantry, I’d argue that’s a feature, not a gap.

Would I Put One On My Own Office Door?

I would, because the install is four steps with one Phillips screwdriver and no electrician or rewiring. Four steps, a Phillips screwdriver, an adjustable latch that handles both common backsets. No electrician, no drilling a new hole, no subscription waiting on the other side. That’s a weekend-afternoon upgrade, not a project.

The black finish is the other quiet win. It reads modern on a white interior door without screaming “security hardware,” which matters when the thing lives in your hallway and you look at it every day.

If you’ve been meaning to lock a home office, a garage entry, or the pantry the kids keep raiding, the barrier here is a Phillips screwdriver and twenty minutes, not an electrician or a new door. It reads fingerprints, accepts passcodes, and takes a mechanical key. That’s the job. It doesn’t chase a fourth feature it can’t deliver.

Pros

• Top-mounted illuminated sensor matches how your hand naturally grabs the knob
• Three unlock paths: 50 fingerprints, 100 passcodes, two mechanical keys
• Type-C emergency power port means a dead battery isn’t a lockout
• Four-step install with one Phillips screwdriver, adjustable latch for both backsets
• Matte black finish that suits an interior door instead of shouting at it

Cons

• The 4 AAA batteries aren’t included, so plan to buy them with it
• Passage-mode toggle silently disables the sensor and keypad, which will confuse anyone who doesn’t know it’s there
• Interior doors only, so it’s not a front-door solution
• No app, Wi-Fi or remote access of any kind

Frequently Asked Questions

Is there a monthly fee or app account required?

No fee, no account, no app. Everything is programmed directly on the keypad itself, so there’s nothing to subscribe to and nothing that stops working if a company shuts down a server.

Will it fit my existing door without new holes?

If your door is 1-1/4″ to 2-1/4″ thick with a 2-3/8″ or 2-3/4″ backset, yes. The latch adjusts between both backsets, which covers most standard U.S. interior doors. Measure the backset before ordering if you’re unsure.

What happens if the batteries die while I’m out?

Use one of the two mechanical backup keys, or plug a power bank into the Type-C port on the bottom of the knob to power it long enough to unlock. Battery life is rated up to a year on 4 AAA alkalines, so it shouldn’t be a frequent problem.

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ThorBolt G1 Fingerprint Door Knob Lock

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