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USA Today has an article about a 78 inch touchscreen that’s been deployed in the Ralph Lauren flagship store in London for the Wimbledon event.   They used a foil screen applied to the window glass.  The application allows you to browse a collection 24×7 and place an order with a call back later to obtain payment.  I wish I had a trip planned to London during this time, it definitely sounds like a fun gadget!  It appears that they will take it down after the tournament is over.