yeah well that’s “Screen Mirroring” eg. Apple Airplay, Mirracast , Chromecast, WiDi (Google them)
The WDTV Live Streaming does not support that feature.
The “NEW” WDTV Media Player does support “Miracast” Screen Mirroring but that’s for Android devices
Ask your friend what OS he i running on his laptop … because if it’s MAC OS then Airplay is built in … and is compatible with ATV.
Intel use WiDi
(not an expert on this stuff … but that’s what i’ve read. But i have experimented with Miracast on Android … it works, but a bit laggy for me … framerate takes a hit)