The Schlage LiNK system is a digital security system that allows for remote control and monitoring of the installed lock via computer or cell phone with an internet connection. Use a cell to unlock your door (a great feature if you're allowing guests to stay over by are not home to let them in), monitor who's coming and going, or receive text message alerts from the system (who drank all my soda?)...
The Schlage LiNK uses an intermediary bridge unit that can be accessed by computer or internet enabled on a cell phone, using an icon GUI that allows for control of any Schlage LiNK compatible components. The Schlage LiNK Bridge can relay signals up to 100 feet and uses a low-power radio frequency to transmit remote signals.
For further details and videos of the system in action, check the Schlage site here