You would expect this sort of spy ware in a James Bond movie, but it is very real and can be installed on any door.  I can see the benefits of this neat doorknob when coming home late, but can you imagine having it on a bedroom door.

The knob was designed by LEVER and gives you a birds eye view of the room behind it.  It sets the items and people behind the door in a haze, sorta like looking into a crystal ball.  You can see this doorknob at the display at the Plain People store in Aoyama, Tokyo.

Learn Something: The song “Behind Closed Doors” was written in 1973, by Kenny O’Dell and sung by country singer Charlie Rich.