Written by: Jin Fujisaki / Published: 2026-02-18
You installed a smart lock, but do you still end up pulling out your phone or punching in a passcode anyway? Fingerprint recognition is convenient, but it has its weaknesses—sweat, water, dry skin, and fingerprints that fade with age. Lockin's latest flagship, the "Veno Pro," solves that problem at its root.
The technology it adopts is Palm Vein ID. Just reach for the doorknob and hold your palm up to the sensor. Near-infrared light reads the vein pattern beneath your skin, and within a fraction of a second, the door clicks open. You don't even need to press a finger against anything. Authentication is built right into the simple motion of "trying to open the door."
| Wet hands, children—an authentication accuracy that doesn't fail
image Lookin
The biggest advantage of this technology is that it isn't affected by the environment. Whether your hands are soaking wet from the rain, your skin is dry from winter, or you're dealing with a child's still-growing fingers, the vein pattern itself doesn't change.
I actually tried it in a situation where both hands were full with grocery bags. Even when only my fingertips were free—or even with the back of my hand (it supports multi-angle recognition)—the sensor accurately identified the blood vessels. That miserable moment of pressing your finger again and again, thinking "Huh? It won't open," is a thing of the past. For households with elderly family members, vein authentication—more reliable than fingerprints—will be the deciding factor for adoption.
| Bank-ATM-level security. Forgery is impossible.
image AT Smart Lock
Some readers may already recognize the term "vein authentication." That's right—it's the same principle used by Japanese bank ATMs. Fingerprints carry a non-zero risk of being copied from residue left behind, but veins are inside the body and won't authenticate unless blood is actively flowing.
In other words, forgery by anything other than a living body is physically impossible. The Lockin Veno Pro brings this financial-institution-grade security right to your front door. It can also be combined with 3D structured-light facial recognition. Set it to multimodal authentication—"vein × face"—and there's no chance of letting the wrong person in. You get a fortress that would make any burglar give up and walk away, with no construction required.
| No need to turn the knob. Fully automatic—just push.
image Amazon
It's fully compatible with the "push-pull handles" common in Japanese homes. Once authentication completes, not only does the deadbolt retract electrically, but the latch (the temporary catch) also releases. All that's left is to lightly push the door open with your body.
The three-step process of "click, turn, push" is reduced to a single motion: "push." When you enter the house, an automatic sensor detects that the door has closed and instantly engages the auto-lock. The very concept of forgetting to lock the door disappears. It connects directly to the internet without a Wi-Fi bridge, so you can check the lock status remotely or issue one-time passwords for visitors.
| Summary: ¥50,000 buys you "family safety" and "0.5 seconds"
image Lockin
The price is around ¥50,000 to ¥60,000. As smart locks go, that puts it in the higher tier. But when you consider that the daily stress of your front door drops to zero and you gain security on par with a bank vault, it's hardly expensive.
The morning ritual of "Did you grab the keys?" The frustration of "It won't open!" on a rainy day. Your palm sweeps all of that away. The Lockin Veno Pro isn't just a lock—it's the smartest doorman ever to welcome your family home.
