The Abu Dhabi Airport has installed 10 GoSleep sleep pods (out of a total 35). These pods will be rented for $12 per hour and each pod provides a secure private sleeping area with internet access, electrical charging ports and a secure storage locker for your luggage. This is expensive for longer stays but much cheaper than a hotel room for short stays.
You can leave the privacy cover open, partially closed or completely closed. I love the concept for short power naps but have some concerns about cleanliness. I still haven't seen how the stations will be maintained. How will they keep it clean? What about more frisky passengers that use these as "sex pods"?
It is an interesting concept but I need more info about maintenance before I jump in.