TL;DR: KERUI fingerprint padlock for $10 offers keyless convenience at half the price of Amazon alternatives - buy recommended for frequent key-losers.
Quick Specs
| Detail | Info |
|---|---|
| Product | KERUI Smart Fingerprint Padlock |
| Material | Zinc alloy (waterproof) |
| Fingerprints | 10~20 max |
| Charging | USB rechargeable (built-in battery) |
| Discount | 54% off |
| Original price | $22.02 |
| Sale price | $10.13 |
| Units sold | 4,020+ |
| Rating | 98.0% positive |
| Store | Stone's Store |
Zinc alloy construction gives it real heft and durability. The waterproof rating means it handles rain and outdoor use without worry.
Does this solve the problem of losing keys?
I lost my bike lock key again. Third time this year. At that point, I figured a fingerprint padlock would pay for itself in replacement key costs alone. Decent fingerprint locks on Amazon start around $25~40. Then I found this KERUI padlock on AliExpress at half the price with a 98% positive rating — hard to ignore.
How was the shipping and packaging quality?
Arrived in about 12 days. First thing I noticed: this thing has weight to it. I expected cheap plastic at this price — instead, the zinc alloy body feels genuinely solid and premium. The surface finish is smooth and clean. Included in the box: USB-C charging cable and a basic English manual.
How fast does fingerprint registration work?
Registration is straightforward. Enter admin mode and press your finger on the sensor several times. I registered four prints — both index fingers and thumbs. You can add family members or friends too, which makes sharing easy.
Recognition speed is impressive — under 0.5 seconds and the lock pops open. Wet or sweaty fingers do reduce accuracy slightly, but with dry hands it's near-perfect. That 98% positive rating starts making a lot of sense when you use it.
There's also a security lockout after multiple failed attempts with unregistered fingerprints. A nice touch for a $10 product.
What are the best ways to use this?
Primarily as a bike lock. Not having to carry keys around is genuinely liberating. It also works great for lockers, luggage, storage doors, and tool sheds. I'm considering buying a second one for my office desk drawer.
The waterproof rating holds up in practice — I used it in the rain last week and it unlocked fine. Heavy water on your fingertip might require a second try, but that's expected.
How long does the battery last?
The built-in battery charges via USB. KERUI claims 3~6 months per charge depending on usage. I unlock it 2~3 times daily and I'm a month in with no charge needed yet. When the battery gets low, an LED indicator warns you, so you won't get locked out unexpectedly.
How does the price compare to alternatives?
| Source | Price |
|---|---|
| AliExpress (sale) | $10.13 |
| AliExpress (original) | $22.02 |
| Amazon (similar) | $20~40 |
| Walmart (similar) | $18~35 |
At 54% off, this undercuts most comparable fingerprint padlocks on Amazon by at least half — and with a better user rating than many of them.
Pros and Cons
Pros
- Excellent value at $10.13
- Solid zinc alloy build — feels premium
- Sub-0.5-second fingerprint recognition
- Waterproof for outdoor use
- USB rechargeable — no battery replacements
- 98.0% positive rating — outstanding
- 4,020+ units sold — well proven
Cons
- Wet fingers reduce recognition accuracy
- No PIN/password backup (fingerprint only)
- English-only manual
- If battery dies, you must charge it to unlock (no key backup)
Who is this padlock best for?
- Bike owners tired of losing keys
- Anyone who needs a keyless locker or shed lock
- People sharing access with family or roommates
- Outdoor users who need a waterproof lock
- Budget shoppers who want smart lock convenience
Final Verdict
A fingerprint padlock that actually works, made from solid zinc alloy, with a 98% approval rating — for ten bucks. It's one of the best small purchases I've made on AliExpress. The only real limitation is the lack of a key or PIN backup. If you can live with that, this is a no-brainer at 54% off.
Frequently Asked Questions
Q: Are AliExpress home appliances good quality?
Many are surprisingly good for the price. Focus on products with high sales volume (1,000+) and positive reviews (90%+). The key is doing your research before buying.
Q: Do I have to pay customs duty in Korea?
Orders under $150 (about 200,000 KRW) are duty-free. Above that, you may pay 8-13% customs duty depending on the product category.
Q: What if the product arrives damaged or defective?
AliExpress has a Buyer Protection policy. You can open a dispute within 15 days of delivery for a refund or replacement. Always save photos and videos as evidence.
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This post contains affiliate links. I may earn a small commission if you make a purchase, at no extra cost to you. This does not influence my review or product selection.
