Phantom Touch: Furthering the progress of virtual reality is the Aireal, a haptic device that puffs little donut-shaped air bubbles onto your skin. It can create a range of tactile sensations -- from the feeling of birds flying around your head to flowing water to even an invisible button. You can imagine the possibilities of hooking up the Aireal up to a mobile device -- movies and applications that you can "feel" around you! A U.S. soldier training with the inflatable tourniquet developed by former Army surgeon John Croushorn.