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A lock is the one smart device where failure means standing outside your house. We weighted reliability far above features.
How we tested
Each lock ran 4,000 motorised cycles, was left on a north-facing door through winter, and was tested for fingerprint read speed with cold and wet hands.
Retrofit or replace
Retrofit units keep your existing deadbolt and exterior hardware — faster, cheaper and usually reversible for renters. Full replacements look better and add keypad entry outside.