Stryker Diagnostics, the makers of hip and knee medical devices, chose this V-Pop design as a tradeshow invitation. When you open the invitation, a postcard pops up in the center. The call to action on the postcard was to bring the postcard to the Stryker booth to experience a 3D demonstration of the hip and knee devices. When users held the postcard marker in front of the web cams set up at the Stryker kiosks they were able to view a live 360 degree 3D demonstration of these devices. Take a look at the movie to see it in action!