When Richard Gatarski and a few friends wanted to dine in the Swedish city of Norrköping a few weeks ago, they booked a table at a downtown Italian restaurant that seemed nice.When they arrived, they were greeted by the headwaiter, who asked if they had a reservation. Richard confirmed, and the headwaiter looked at his computer screen.”Gatarski? Hm, let’s see .. yes, there’s your reservation. Welcome!”The headwaiter then picked up what Richard first thought must be some kind of new, electronic touch-pen, and moved it toward the screen. Richard is a tech savvy Inter...