One of the biggest drawbacks of smart locks is that, unlike traditional locks, they’ll eventually run out of power, which means replacing or recharging their batteries at least once a year.
The best smart locks try to lengthen this time as much as possible, but the Lockin Veno Solar could eliminate that inconvenience entirely. It has a solar panel on the exterior portion that very slowly charges up the lock’s battery, so that you never have to worry about recharging it or replacing the batteries.
The Lockin Veno Solar is actually available in two variants — one has a facial unlock feature, and the other has a palm vein unlocking feature. I’ve been testing the Face model to find out if it does enough beyond simply taking care of power for you to be worth buying.
Lockin Veno Solar review: Price and availability
The Veno Solar series went on sale in mid- 2026, with both the Palm and Face models starting at $199 (you can pay $259.99 for a model that bundles a door handle). I’m reviewing the Face variant.
You can get the Lockin Veno Solar series for yourself straight from the Lockin website or from Amazon.
Design and setup
Lockin Veno Solar specs
Connectivity: Wi-Fi, Bluetooth, Thread
Power: Solar-charged 37 Wh battery
Unlocking methods: Palm vein or facial recognition, PIN code, app, voice assistant, mechanical key
Works with: Matter
BHMA: Grade 3
Size: 11.4 x 3.86 x 4.8 inches
Water resistance: IP53
Installing the Lockin Veno Solar is very similar to installing any other smart lock that replaces your deadbolt. This is not a retrofit lock, so you will need to replace the interior thumb latch, the deadbolt in the door, and the exterior portion of the lock.
Essentially, you’ll unscrew your existing lock and deadbolt, then fit the included lock and deadbolt and thread the exterior portion of the lock through to the inside. Then screw the base plate into that exterior part of the lock and fit the thumb latch portion onto the base plate. The whole process should only take 15 to 20 minutes.
After you’re done physically installing the lock, you’ll need to add it to the Lockin app. I also found this process to be quite easy. You’ll download the app, then either sign in to your account or create a new one if you don’t have one already. Then simply follow the on-screen instructions to add a new lock. I found it was recognized immediately. In this process, you’ll be walked through the face scan.
On the outside of your door, there’s a keypad with either the palm vein scanner or the face scanner, depending on the model you go for. There’s no fingerprint sensor on either of them, but there is a solar panel on the bottom third or so, and you might not be able to tell that’s what it is if you didn’t already know. The lock also has a physical key slot, which can come in handy if something stops working or a guest needs to enter.
On the inside, there’s a thumb latch along with a button to mechanically lock or unlock the door. There’s also a cover for the battery compartment which, hopefully, you’ll never have to open after you install it.
The lock seems to be durable enough, but it’s not quite as weather resistant as some other smart locks. It has an IP53 rating, which is fine for some water spray. It held up during my testing, but to be fair, the weather has been pretty nice where I live. The lock also has an ANSI Grade 3 certification.
Performance
The Face model that I reviewed captures depth-sensing 3D face recognition that Lockin rates at under one second. In practice it was generally fast enough, though I wouldn’t call it instant — and it didn’t feel like it was under one second. It usually took a second or two for the lock to realize there was someone outside the door and start scanning in the first place. Once the scanning started, it took less than a second, but there was still that initial lag.
This isn’t a dealbreaker, and to be clear, face scanning is still convenient — but it would be even more convenient if the lock supported a feature like Ultra Wide Band (UWB) or Aliro, which allows the lock to sense your phone or watch, and unlock based on that signal.
I did find that the lock’s Wi-Fi connectivity was quite good. I placed the lock on the door to my garden shed, which has historically had limited reception — plenty of other smart locks I’ve tested struggle to hold a connection out there. This one stayed reliably online throughout.
As for the solar charging, it’s slow. The lock arrived at 83% out of the box, and a week later it had crept up to 90%. That sounds underwhelming, but it’s worth remembering what the point isn’t fast charging — it’s that the battery doesn’t drain over time. And it didn’t. It slowly gained power instead of losing it, which is exactly the behavior you want from a solar lock.
App and smart home
The Lockin Smart app is how you’ll control the lock’s settings and features. You can create one-time PINs, enroll new faces and PIN codes, set up auto-lock settings, and so on. One thing I would have liked to see is an overview of how much battery the device gets over time, but not having it isn’t a huge deal.
Unlike the Desloc V150 Plus, which is the other solar-powered smart lock that I’ve reviewed recently, the Lockin Veno Solar supports Matter, which means you can integrate it into a variety of smart home ecosystems. You have to set the lock up in the Lockin app, but you don’t have to control it there. Instead, you can control it through apps like Google Home or Apple Home and integrate it into automations and other cross-product systems. Matter support is kind of table stakes for smart locks these days, so it’s nice to see it here.
Verdict
The Lockin Veno Solar is a solid smart lock, and for what it offers, it’s perhaps the best option. That’s to say, the lock has solar charging, so you never have to worry about manually charging or replacing the batteries. But it goes beyond that with a decently convenient unlocking method and, perhaps even more importantly, Matter support, so it’ll work with a wide array of modern smart home ecosystems.
There are some limitations. For example, if you routinely get torrential rain, you might be slightly concerned about the IP53 water resistance. And it’s worth keeping in mind that it’s going to take a second or two to unlock your door if you rely on the face scanner. But, if you like the idea of not having to worry about charging your lock, for now, this one is the way to go.