A more broadly appealing kind of smart security comes in the form of smart locks. Dozens of companies are coming up with innovations in this field, but one of the hottest is lock-maker Kwikset, whose Kevo system incorporates regular metal keys, automobile-style key fobs and smartphone control.
Kevo is interesting because it can be used like a traditional lock, but it also allows you to control access to your home, no matter where you are. The smartphone functionality works through encrypted eKeys, which have assignable user levels and can be shared between users.
Read more: http://www.usatoday.com/story/tech/2014/01/09/reviewed-ces-smart-home/4399645/