Best for Two-factor authentication availability
Yale Assure Lock 2 Smart Lock
4.5 feature score
Highest scored product for this feature based on supporting review evidence.
Best Smart Locks for Two-factor authentication availability
Two-factor authentication availability Decision Dashboard
Safest pick
Kwikset Halo Touch Fingerprint Smart Lock
3.5 feature score
Balances feature score, supporting reviews, and overall product strength.
Most evidence
ULTRALOQ U-Bolt Pro Smart Lock
1 supporting review
Has the broadest review evidence for this feature.
Best overall product
Schlage Encode Plus Smart Lock
3.5 overall score
Strongest overall product among items with scored evidence for this feature.
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Two-factor authentication was explicitly praised as part of the app’s account security requirements.
Pros: Lock/unlock speed, Guest Codes and Access
Cons: Backset compatibility, Warranty and support
Voice-unlock PIN requirements were viewed both as a useful extra security layer and, by one reviewer, a security flaw if the code is spoken aloud.
Pros: Lock/unlock speed, Locking reliability
Cons: Auto-relock after failed attempts, Door compatibility (deadbolt fit)
Two-factor authentication was criticized as missing from the Schlage app, reducing account-security confidence compared with some rival smart-lock apps.
Pros: Locking reliability, Lock/unlock speed
Cons: Weather resistance, Door-sense
Two-factor authentication was a clear weakness in the Reviewed review, which criticized the app for lacking this extra account-protection layer.
Pros: Locking reliability, Build quality and durability
Cons: Two-factor authentication availability, Backset compatibility