Video calls: How can you interact more naturally?
10 December 2013 Last updated at 00:53 GMT
Imagine a video call where you are not only looking at another person but able to see into their world, almost as if you were standing opposite them.
Researchers at Microsoft - the owner of Skype - are working on just that: a "magic window", where interactions are more natural than ever.
The BBC's North America technology correspondent Richard Taylor tried out the technology at the firm's headquarters near Seattle.
You can follow Richard on Twitter at @RichTaylorBBC.