If you sleep for eight hours a day and live to be 90 years old, you will have been asleep for 30 years of your life.

A software engineer and former professor, Daniel Oldis, thinks we should be finding a way to capitalize on this time, and to use it to interact with other people.

Oldis has studied lucid dreaming for four decades, and is on the experimental threshold of being able to send messages to other people, asleep or not, via the internet.