What are some ideas for a smart home?

Hmm, i hope you could afford such an endeavor, the technology could get expensive. First, the front door, install a thumb-scan lock to get in. Next, media, Have a motion sensor wired so the TV, stereo, and computer all turn on when you walk in. Also, have clap-on systems, so everything can turn off by clapping. These are just basic ideas, but if you are serious, you might want to hire an electrical engineer to develop the systems for you, since these smart technologies are not mainstream, also, please pick a best answer