Here is very similar technology: http://www.chrisharrison.net/index.php/Research/PneumaticDisplays http://www.chrisharrison.net/index.php/Research/PneumaticDis.

Here is very similar technology: http://www.chrisharrison.net/index.php/Research/PneumaticDisplays http://www.chrisharrison.net/index.php/Research/PneumaticDis... Nokia has also done research into this but with little bit different technology: http://c2499022.cdn.cloudfiles.rackspacecloud.com/wp-content/uploads/2008/07/nokia-haptics.pdf http://c2499022.cdn.cloudfiles.rackspacecloud.com/wp-content...