
Sifely Smart Lock
Score: 78/100
Nice Digi Smart Lock
Score: 72/100Rankings

The Sifely Keyless Entry Fingerprint Smart Door Lock is a lever-style smart lock designed to retrofit standard residential doors without drilling. It offers five to six unlock methods including fingerprint, keypad, key cards, fobs, and physical keys, with optional remote access via a separate Wi-Fi gateway. It is best suited for indoor or sheltered exterior doors and multi-user households.

The NICE DIGI Smart Keypad Door Lock is a budget-friendly, keyless entry system designed for standard wooden doors with easy DIY installation. It offers IP66 water resistance and AES-256 encryption, but lacks smart home connectivity and a formal security grade. It is best suited for homeowners or renters seeking simple, reliable keyless entry without app integration.
| Attribute | ![]() | ![]() |
|---|---|---|
12 monthsbest | 12 monthsbest | |
1 yearsbest | — | |
2 inchesbest | — | |
2.75 inchesbest | — | |
158 °Fbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Support & Warranty(1) | ||
Warranty Length (years) | 1 years | years |
Security & Access(3) | ||
Security Grade | AES-256 | |
Unlock Methods | Fingerprint, Keypad, Key Fob, Card, App, Key | Keypad, Mechanical Key |
Keypad Type | Keypad | Backlit |
Installation & Compatibility(1) | ||
Door Thickness Compatibility (inches) | 1.3125-2 inches | Standard inches |
Build & Durability(3) | ||
Material | Zinc Alloy | Plastic/Metal |
IP Rating | IP66 | |
Finish | Matte Black | Black |


Products in the top-left offer the best value (high score, low price).

Professional reviewers position the Sifely keyless fingerprint lock as a budget-friendly, easy-install option with strong suitability for indoor, family, and light exterior use. They caution against relying on it in consistently harsh outdoor conditions or for users with very high-moisture or dirt-prone environments, noting that fingerprint reliability under wet conditions is less stable than higher-end competitors.
Everyday users tend to rate this lock highly for interior use and protected entry doors, praising its ease of installation and value for money. The main caveats reported by consumers are conditional grip on fingerprint recognition when hands are wet or dirty, and the need for a gateway to enable full remote features.

Professional reviewers and editors praise the NICE DIGI for its secure keyless convenience, responsive keypad operation, and durable build quality. They highlight the simple DIY installation process that eliminates the need for professional help.
Everyday users and inferred feedback from product demos highlight the quick setup and reliable keyless entry as major benefits. Common praise focuses on the family-friendly nature of managing multiple passwords and the convenience of not needing physical keys.
“much better than expected for the price”

“love the fingerprint unlock indoors; it becomes a habitual, quick method”

“short video guide and clear markings made replacement of their old lock very simple”


