
eufy Security
The eufy FamiLock E34 is a Wi-Fi-enabled smart deadbolt featuring biometric palm vein recognition as its primary unlocking method, offering ANSI/BHMA Grade 1 security. It combines this novel vein-scanning technology with traditional smart home controls, multiple backup authentication methods, and a dual-battery power system for reliability.
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Expert Opinion
Professional reviewers highlight the novelty of palm vein technology as a major differentiator, noting its effectiveness in addressing spoofing vulnerabilities common in fingerprint systems. The dual power system and no-drilling installation are praised for practicality and reliability. However, experts note that the limitation of palm vein recognition to unlocking only may be restrictive for users expecting full biometric control.
What Users Say
Users appreciate the innovative palm vein technology and the convenience of DIY installation without drilling. The long battery life and backup power system are frequently cited as reassuring features. Common complaints focus on the inability to lock the door via palm vein and the limited storage capacity for user profiles.
Common Complaints
Palm vein recognition is limited to unlocking only, not locking the door. Limitation of storing only 50 palm vein IDs may not suit large organizations
How It Compares
The eufy FamiLock E34 distinguishes itself in the smart lock market through its palm vein biometric system, which is relatively uncommon compared to fingerprint or facial recognition alternatives. While specific competitor comparisons are not detailed in the provided data, its primary distinction lies in this novel biometric approach and its local data storage privacy feature.

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