1. Doorknob with a computer could lock all doors and contact police in case of burglary.

2. A smart house will get in touch with you, police or supermarket via Internet.

3. I would like to live in such a house because it'll be very convenient and secure, easy to control my electronic devices at the push of a button.

4. There are definitely some disadvantages to this technology. It's expensive to have a smart house, you'll pay more for the electricity. Hackers can break into your home.