The interesting question is what happens when the battery dies · review
The only lock on this shelf that says where your face and fingerprints are kept — and the only one that tells you it may not fit without cutting the door.
The conclusion Two things no other lock on this shelf offers: it says your face, palm and fingerprint templates stay on the door rather than going to a cloud, and it tells you honestly that its mortise body may need the door drilled or cut. Add eight credential types, a 4-inch indoor screen with night vision that replaces a video intercom, and IP67. No battery runtime is published anywhere, and no BHMA grade, at two hundred and fifty-nine dollars.
No battery runtime. No BHMA grade.
And a 3D face scan is not a password you can change.
A biometric reader either keeps a mathematical template in a chip on the lock, which never leaves the door, or syncs it to the maker’s servers so the app can manage it.
The second puts your face, in template form, on a cloud service you do not control.
YINTIN states the first. Four other locks on this shelf read a fingerprint, a palm or a face and publish nothing at all about where it goes.
On this shelf that one sentence is worth more than any feature.
Which is the other unusual sentence.
The mortise body is larger than a standard mechanical deadbolt. Compare door thickness, lock-body opening and hole positions before ordering. Drilling or mortising may be needed.
Every other lock here either claims a no-drill fit or says nothing.
This is a front-door project, not a fifteen-minute swap. Better to know.
Which is a real saving.
Camera, two-way talk, visitor alerts, and a 4-inch indoor color screen with infrared night vision.
That is what a video door intercom does, and on this site those run from eighty to seven hundred dollars.
One device, one hole in the door, one battery.
The trade: if the lock fails the intercom goes with it — and no runtime is published for the battery driving both.
Which is two steps, not one.
IP53 resists spray. IP54 resists splashing. IP67 is dust-tight and survives temporary immersion.
On an exposed front door with no porch, that is the difference that shows up in year three.
On sale at around $259 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Privacy | Face, palm vein and fingerprint data are stored LOCALLY ON THE LOCK — stated. It is the only statement on this shelf about where biometric data lives, and on a lock that reads a 3D face it is the most consequential sentence on the page. Five locks here read a fingerprint, a palm or a face; one says the template stays on the door |
|---|---|
| Credentials | Eight ways in, named: 3D face recognition, palm vein, fingerprint, passcode, key card, app, mechanical key and remote unlock. It is the widest credential set on this shelf |
| Screen | A 4-inch indoor color screen with infrared night vision, showing who is outside without reaching for a phone — stated. No other lock on this shelf has a screen, and this one does the work of a door intercom as well |
| Camera | A video doorbell with two-way talk and remote entry approval through the Tuya or Smart Life app, with visitor alerts — stated |
| Ratings | IP67 dust and water protection, stated. Far the highest on this shelf, where the others run IP53 and IP54: IP67 means dust-tight and able to survive temporary immersion, against IP53's protection from spray only |
| Failure path | Both layers: a mechanical key and a USB-C emergency power input, with low-battery alerts before either is needed. The battery is rechargeable and no runtime figure is published |
| Fitting | A MORTISE lock body larger than a standard mechanical deadbolt, and YINTIN says so plainly: before ordering, compare door thickness, lock-body opening and hole positions with the installation dimensions, and drilling or mortising may be needed. It is the only honest fitting warning on this shelf |
| Battery | Rechargeable with low-battery alerts, stated. NO runtime figure appears, where at least eight of the fifteen locks on this shelf publish one |
| Support | Two years of contact for installation or product issues, stated |
| Amazon reference | B0GWRDDWJG |
| EAN | 0770612163218 |
Because a 3D face scan is not a password you can change. A biometric reader either keeps a mathematical template in a chip on the lock, which never leaves your door, or synchronizes it to the maker's servers so the app can manage it — and the second means your face, in template form, sits on a cloud service you do not control. YINTIN states the first, and it is the only lock on this shelf to state anything. Four other locks here read a fingerprint, a palm or a face and publish nothing about where the data goes. On this shelf that one sentence is worth more than any feature.
Possibly not without work, and YINTIN says so rather than letting you find out: the mortise body is larger than a standard mechanical deadbolt, and before ordering you should compare the door thickness, the lock-body opening and the hole positions against the installation dimensions, because drilling or mortising may be needed. Every other lock on this shelf either claims a no-drill fit or publishes nothing. This is a front-door project rather than a fifteen-minute swap, and the warning is the most useful thing on the page after the privacy statement.
For most purposes, yes, and that is a real saving. It carries a camera, two-way talk, visitor alerts to the app and a 4-inch indoor color screen with infrared night vision — which is what a video door intercom does, at prices on this site running from eighty to seven hundred dollars. Buying one device rather than two also means one hole in the door and one battery. The trade is that the screen is part of the lock's system: if the lock fails, the intercom goes with it, and no runtime figure is published for the battery driving both.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Credentials | Failure path | Battery |
|---|---|---|---|---|
| YINTIN X5 3D face recognition smart lock with camera, palm vein and 4-inch indoor screen | $259 | Eight ways in, named: 3D face recognition, palm vein, fingerprint, passcode, key card, app, mechanical key and remote unlock. It is the widest credential set on this shelf | Both layers: a mechanical key and a USB-C emergency power input, with low-battery alerts before either is needed. The battery is rechargeable and no runtime figure is published | Rechargeable with low-battery alerts, stated. NO runtime figure appears, where at least eight of the fifteen locks on this shelf publish one |
| We Technology RL14 3D face recognition smart lock with camera and intercom | $200 | Seven ways in: face recognition, fingerprint, passcode, IC card, mechanical key, the Tuya app and a temporary password. Up to 100 total users, with fingerprint and card capacities stated to be in the specifications rather than on the page | Both layers: a mechanical key among the seven unlocking methods, and USB Type-C emergency power. On a lock needing recharging every three to four months, the emergency port is not a last resort but a routine part of ownership | A 4200 mAh lithium battery giving approximately 3–4 months, with USB Type-C emergency power — stated. Three to four months is the SHORTEST runtime on this shelf, where the longest is a year and most are six to eight months. A face reader that wakes at 5–20 cm (2 to 7.9 in) is expensive to keep awake |
| Philips DDL242X-1HW-L 4200 Series Wi-Fi keypad deadbolt with handle set | $170 | Keypad codes — permanent, one-time, periodic and recurring — plus fingerprints unlocking in 0.3 seconds, the app, and Alexa or Google voice. Four code types is the most flexible code scheme on this shelf | NOT PUBLISHED. Ten bullets, one of them devoted entirely to the battery and its prohibitions, and not one word about a physical key or an emergency power terminal. This shelf's tag reads: the interesting question is what happens when the battery dies. This shelf's introduction says the answer is a key override, an emergency terminal that takes a power bank, or nothing at all — and at least ten of the fifteen locks here answer it | Up to 6 months with an intelligent low-battery alert — stated, with two conditions: BATTERIES ARE NOT INCLUDED, and only standard 1.5 V alkaline cells may be used, with rechargeable and high-power lithium cells explicitly forbidden to prevent damage. That prohibition is unique on this shelf and it narrows the options at replacement time |
| Nuki 221272 Smart Lock Ultra, euro profile retrofit, with Universal Cylinder | $359 | The app, auto-unlock on arrival, remote lock and unlock, access permission management, and voice through Apple Home, Google Assistant, Alexa or SmartThings. No keypad and no fingerprint reader: there is nothing outside the door | By construction: the original cylinder and key are untouched, so the key opens the door from outside whatever the lock's battery is doing. That is the quiet advantage of a retrofit and it is why this shelf's introduction separates the two kinds. No emergency power terminal is published and no battery life appears | Not published. No cell type, no capacity and no runtime appears, where at least eight of the fifteen locks on this shelf publish a figure. On a retrofit the consequence is milder, because the key still works |
Details checked on October 8, 2026.
A front door being replaced or reworked anyway, where face recognition and a door screen replace both a lock and an intercom
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Matter over Thread · Apple Home Key · rechargeable Li-ion, 6 months stated · no drilling
A retrofit lock with native Matter over Thread, so it joins Apple Home, Google Home and Alexa without a vendor bridge. Aqara states Apple Home Key support, a rechargeable battery quoted at up to six months, and a quiet unlocking mode.
Best for: A household already running Matter or Apple Home, that wants the lock to be part of it rather than another app.
Retrofit · built-in Wi-Fi, no bridge · Matter over Thread · charged at the door · months per charge
Nuki's fifth-generation lock puts Wi-Fi inside the unit, so remote access needs no bridge or hub, and adds Matter alongside Bluetooth. The battery charges at the door with the supplied cable rather than coming off it.
Best for: A household that wants remote access without adding another box to the hallway.
Retrofit · fingerprint, app and Bluetooth · magnetic auto-lock · 6 cells · no drilling
A retrofit lock that mounts over an existing cylinder with no drilling and no cylinder change. Signstek states fingerprint, app and Bluetooth access, magnetic auto-locking, and six batteries; the existing key still works from outside.
Best for: A first smart lock, and particularly a rented apartment where nothing may be altered.
