Smart Home Technology is becoming quite the rage lately. Most everything is made to operate off of your home's wifi system. Everything connects to give you complete control over security, HVAC, lighting and entertainment either remotely or directly from a device at home. Devices can open and close doors, set entrance codes for workers or friends, raise and lower light levels, control entertainment systems or turn on your AC before you arrive home.
Here's a quick overview of the different kinds of things you can control in your house and how it can add safety and convenience to any home. I just finished getting a Smart Home Certification and I'm pretty impressed with what can be done.