Anti-PEEP Smart Lock: How Virtual Password Protects Your PIN
Shoulder-surfing is one of the oldest ways to steal a door code. Someone watches you type, memorizes your PIN, and walks in later. The SK-H1 aluminum smart lock solves this with anti-PEEP (anti-pinhole/virtual password) technology.

What Is Anti-PEEP Password?
Anti-PEEP (also called virtual password or anti-peeping password) lets you add random digits before or after your real PIN. As long as the correct digits appear consecutively somewhere in the middle, the lock opens. The extra random digits mask your real code from anyone watching over your shoulder.

Waterproof and Outdoor-Ready
The SK-H1 is built for aluminum and outdoor doors. It resists high and low temperatures, is waterproof and anti-freeze, and works year-round outdoors. The aluminum alloy body is corrosion-resistant.

3D Face and Fast Fingerprint
- 3D face recognition – dual cameras, stereo imaging, touchless unlock.
- Semiconductor fingerprint – ≤0.5 seconds recognition speed, ≤0.001% error rate.
- Night vision – works in low light.
- Error attempt lockout – locks after repeated wrong attempts.

Specifications of the SK-H1
- Model: SK-H1
- App: Tuya Smart or TTLock (WiFi)
- Biometric: 3D face + Semiconductor fingerprint
- Recognition speed: ≤0.5 seconds
- Error rate: ≤0.001%
- Waterproof: Waterproof, anti-corrosion, anti-freeze
- Material: Aluminum alloy
- Lock cylinder: Class C anti-theft

Built to Last
The SK-H1 passes 96 hours salt spray testing, 72 hours high-low temperature testing and 200,000 unlocking cycles. It is certified by CE, FCC, RoHS and ISO. It is ideal for aluminum doors, sliding doors, storefronts and outdoor entrances.

Getting Started
As an OEM/ODM manufacturer, we supply aluminum profile smart locks with custom logo, packaging and color options for distributors and project buyers. Contact us for samples, bulk pricing or OEM/ODM customization.