Kate Spade Saturday and eBay --- Digital Window Shops

http://mashable.com/2013/06/22/kate-spade-saturday-window-shops/

this is window shop with Kate Spade Saturday and eBay. people can touch glass which like ipad to choose what they want in store. I think the bookstore still can use this technology to bring some fun to people in the future.
in my project, because time and technology is limited, the button just suit for model, I use the switch button in the window model to interact with passerby. so if use my idea in physical bookstore, touching the glass to make device move is better then button.

for project model

in physical store