Smart locks offer many options to lock and unlock doors. The most popular key-free entries are passcodes, key fobs and smartphone controls. Passcodes allow you to enter a series of numbers to open the door. The best smart door locks allow you to create multiple passcodes for each family member. They also include anti-theft features to confuse thieves that may try to memorize the code to intrude. Key fobs are the most popular smart locks used by property managers managing rental properties. There’s less worry about the master key because key fobs allow you to program any fob to fit each property, and disable the key if tenants change or the key is lost. To unlock the door, simply press the key fob against the lock and open the door as instructed by the provider. Key fob smart door locks are also popular for homeowners. Lastly, smartphones now have the power to open doors using the provider’s mobile app. Simply use the app to open the door without needing a key. Some smart door locks also allow voice commands from Amazon’s Alexa, Google Assistant or Siri to open the door for convenience. Other smart lock options include fingerprint, radio frequency identification (RFID) badges, and even face recognition to extra security.