security issue , but anything is safer than hiding a spare key in a very obvious flower pot. Most smart locks provide several different ways to enter, so you're never locked out.

Smart locks can also act as “ two - factor authentication ” for your door: Just like Gmail sends you a notification when it sees a login attempt from an unknown device, a smart lock sends alerts if someone tries to unlock the door at an odd time, say, during your work hours or when no one is supposed to be home, or if someone tries to guess the password or break into the door.
Switching home security from a traditional lock and key to a smart lock can give a sense of freedom to many people. Smart locks are a lifesaver for those who forget or lose their keys.
It also features voice integration that allows you to control the lock with a simple command instead of getting out of bed to lock it. It's even practical for relatives or caregivers, as instead of having a key, they have their own code.
Retrofit locks provide connectivity to your current deadbolt, allowing for operation via your phone, with automatic unlocking or voice commands. Complete deadbolt replacements are a bit heavier and provide options for keypads and fingerprint sensors, but require more craftsmanship.
While the point is not to carry keys all the time, it's good to have backups in case your WiFi, power supply, or lock batteries die.
A WiFi connection is also required to access the lock from your phone when you're away from home. Without WiFi, you'll only be able to use the app when you're within Bluetooth range.
Check out some of the best smart locks of 2020:
August WiFi smart lock

Input functions: App, auto-unlock, voice command
Smart home connection: Alexa, Google Assistant, Apple HomeKit, Zigbee
Power: 2 CR123 batteries
Yale Assure Lock SL x Connected by August

Input modes: Keypad, app, auto-unlock, voice command
Smart home connection: Alexa, Google Assistant, Apple HomeKit, Zigbee
Power: 4 AA batteries
Schlage Sense

Input modes: Keypad, app, mechanical key
Smart home connection: Alexa, Google Assistant, Apple HomeKit, Zigbee
Power: 4 AA batteries
Ultraloq U-Bolt Pro

Input functions: Fingerprint, keypad, app, mechanical key, auto-unlock, shake to open, voice command
Smart home connection: Alexa, Google Assistant
Power: 4 AA batteries
Lockly Secure Pro

Input modes: Fingerprint, keypad, app, mechanical key, auto-unlock, voice command
Smart home connection: Alexa, Google Assistant
Power: 4 AA batteries
