Up until last year, digital styluses — ones with electronic parts inside — worked pretty well across multiple iPad models. Developers including Adonit took over two years to develop electronic iPad writing tools that were thinner-tipped than fingers and rubber-domed styluses, but they succeeded, enabling iPads to serve as notepads and sophisticated canvases for artwork. Then the iPad Air 2 came out, subtly changing the touch-sensing technology that […]
