Have you ever spent a significant amount of time hunched over a tablet at your desk, or leaning to one side to check a smartphone? If so, you’ve probably noticed some back pain due to improper posture and support, and high-end office furniture firm Steelcase wants to help. The company has just announced the Gesture chair, a new product that aims to accommodate the non-traditional postures encouraged by the use of mobile devices like tablets, smartphones, and laptops. These postures are not