I am installing the Schlage LiNK Z-wave system in my house. If you pay for the remote service you can get updates and even lock and unlock the doors by remote, as well as lights, thermostat, inside and outside power outlets. You can even add cameras to the system. You can remotely control from a computer and several types of smart-phones (in my case a BlackBerry Curve 8330). Remote Management Demo
There are other devices that use Z-wave and from what I can find you can link them all together.
Here is the type of Deadbolt that I'm getting. Schlage LiNK Deadbolt (Bright Brass) : Deadbolts | RadioShack.com
More Z-wave stuff at RadioShack.com