About

Hey, glad you found us.

If you've ever stood in front of a door lock display wondering what half the features actually mean in real life — this blog is for you.

LinkHome Journal is where we write about smart door locks and home entry the way we'd explain it to a friend: honestly, practically, without the marketing spin.

Why we started writing this

We've spent years in the door lock industry — working with manufacturers, sourcing products, selling into markets across Asia. And one thing always stood out: most of the content online either reads like a brochure or skips the parts that actually matter when you're making a real decision.

So we started writing it ourselves.

What you'll find here

Product breakdowns that don't just repeat the spec sheet. Buying guides based on actual use cases. Installation realities for different door types. And occasionally, a look at what's happening in the global smart lock market for those of you on the sourcing or distribution side.

Who we are

We're the team behind LinkHome, a Korean smart access brand. More about what we make is over at www.linkhome.co.kr.

If you're here for business — distribution, sourcing, partnership — head to our [For Distributors] page.

Otherwise, just start reading. We hope something here actually helps.

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What Is a Smart Lock?

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A smart lock replaces the traditional key with digital access. Instead of carrying a physical key, you unlock your door using a PIN, fingerprint, smartphone app, card, or — on newer models — your face or palm vein. The hardware looks similar to a conventional door lock. The difference is entirely in how it works. How Does a Smart Lock Work? A traditional lock has one job: respond to a physical key turning inside the cylinder. A smart lock responds to digital signals instead. When you authenticate — by entering a PIN, scanning your fingerprint, tapping your phone, or using an app — the lock's internal motor turns the bolt. That's the core mechanism. Most smart locks run on batteries. The authentication method varies by model, but the underlying process is the same: verify identity, move the bolt. Smart Lock Access Methods Not all smart locks work the same way. Here's what separates them: Most smart locks...
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Smart Lock for Metal Doors: What to Check Before You Install

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  Smart locks can be installed on metal doors — but the process involves more consideration than wooden doors. Drilling is harder, signal interference is a real factor, and weather resistance requirements are typically higher. Get the checks right before purchasing and installation goes smoothly. Skip them and you may face misaligned holes that are difficult to correct, connectivity problems, or a lock that deteriorates faster than expected. Key Considerations for Metal Door Installation 1. Drilling — fundamentally different from wood Metal doors cannot be drilled with standard wood bits. HSS (high-speed steel) or cobalt drill bits are required, along with pilot holes to prevent the bit from wandering. Thick steel doors or reinforced security doors may require a step drill for clean bore preparation. If new holes need to be drilled, professional installation is strongly recommended — incorrect drilling on a metal door is difficult to reverse and can comprom...
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How Does a Smart Lock Work?

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  Smart locks look similar to regular door locks. The bolt is the same. The deadbolt mechanism is the same. What's different is everything that happens before the bolt moves. Instead of a physical key turning a cylinder, a smart lock receives a digital signal — from your phone, your fingerprint, your face, or a PIN — and uses an internal motor to do the work. That's the core of it. But there's more worth understanding before you buy one. The Three Core Components Every smart lock — regardless of brand or price — is built around three parts: Mechanical lock The physical bolt and locking mechanism. This is identical to a standard deadbolt. The smart features sit on top of this — they don't replace the physical security. Motor When authentication succeeds, the motor turns the bolt. Think of it as a motorized version of your hand turning a key. Most motors are small, quiet, and battery-powered. Control board The brain ...
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