Fortress of Babble

NPR's Day to Day has a piece on a new device that will isolate you in a cone of babbling so you can hold a conversation in private with others stand a few feet away and not being able to understand the conversation. At times I've wished for a portable version of this.

The desktop-sized elements called Babble

To hear the piece visit their site and listen to Talk Freely Behind the Fortress of Babble.