Tactus Technology, a small start-up out of Fremont, CA, made a big splash at this year's Society for Information Display (SID) conference. The company, which came to Boston, MA toting a single product, showcased an early prototype of its morphing touchscreen display. The screen, which looks and acts like all other smartphone and tablet displays, has a very special and unique feature: it can dynamically create and remove tactile keys on demand. Tactus utilizes a specially designed window that sits directly on top of a display's touch sensor -- which we're told can be fitted to almost any touchscreen -- that has specially designed channels. A "proprietary oil" is, at the behest of the underlying operating system, forced in and out of these channels to raise the display surface and create a tactile interface for the end-user. It's a concept that, much to the delight of ardent smartphone and tablet keyboard lovers, can provide a physical input experience without sacrificing screen real estate. Have a look at our hands-on gallery then saunter past the break to see this tactile touchscreen in action and read our impressions.