How to upgrade your deadbolt with a smart lock - and the one I recommend most
Briefly

The Nuki smart lock is a retrofit solution that works with existing deadbolts, allowing users to maintain physical key access. Its installation is straightforward and does not require professional help, and its app setup is user-friendly, as no account is necessary. The smart lock does produce noise during operation, which may be perceived as outdated, but users may find this manageable. The lock's battery life is substantial, lasting up to a year, and it features a convenient recharging method via a magnetic port.
The Nuki smart lock fits on your existing deadbolt's mechanism, keeping your door's external appearance unchanged while allowing physical key access.
Setting up the Nuki smart lock requires no handyman skills and includes easy app pairing without the need for an account.
Although the Nuki smart lock is loud when in use, making a whirring sound when locking and unlocking, this noise is not a deal-breaker.
The Nuki smart lock's battery lasts up to a year and can be recharged easily through a magnetic port without removal or disassembly.
Read at ZDNET
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