We can expect communication between our smart phones and other devices. But, who designed the Smart Rope, which transmits information about your workout to your smart phone? It does more than keep track of time and numbers. By analysing motion, it counts jumps and how many calories have been burned during the workout. This information is based on the user's body mass index, which all physically fit people are familiar with. It even makes recommendations for how long a workout session should last. The ingenious design comes from the Tangram Factory, a business with offices in Seoul, Korea and New Jersey in the U.S.