You can set as many as 30 unique access codes for family and friends, set times for when you allow guests to use those codes, or view which codes have been used. (slashgear.com)
Thanks to the free Android app (available to users through the Google Play store and Apple users through the App Store), owners of this deadbolt can create and delete up to 30 unique access codes from their phones, schedule access codes so guests can enter only at specified times, update their lock's settings, and check on battery life. (digitaltrends.com)
Assign guests unique access codes for easy entry. (amazon.com)