A smart lock is typically part of a robust smart home security setup, but you don't have to invest in a full blown
system to use one. If you're using a home automation hub to control things like lighting and thermostats, you can add a Z Wave or Zigbee smart lock to the system without much effort. Alternately, if you don't have a home automation hub, look for a Wi Fi or Bluetooth lock that comes with its own mobile app. Smart locks use standard pre drilled holes and are fairly easy to install. Some models use your existing keyed cylinder and deadbolt hardware and attach to the inside of your door, while others require that you remove your existing interior and exterior escutcheons and replace the deadbolt and strike hardware. Smart locks can be opened and closed using a mobile app and will send a notification
when someone locks or unlocks a door, and most allow you to create permanent and temporary access schedules for family members and friends based on specific hours of the day and days of the week.