In an effort to deliver high-quality user experience with high-fidelity tactile sensations, thereby allowing users to feel what they are doing, a number of researchers have strived to develop new display technology such as “TeslaTouch” (Bau et al., 2010), “Senseg Tixel™ (2011),” and “Tactus Intelligent Surface™ (2013),” which have recently gained special attention at the international Consumer Electronic Show. TeslaTouch and Tixel technology represent a radical development, in that they enable users to feel various virtual textures displayed on the screen through changes in surface friction; however, tactile feedback for pressing buttons, target acquisition, and “press and hold” interactions cannot be implemented with the two electrostatic friction-based technologies when the finger remains stationary on the surface or when the finger touch and displacement should be mapped to virtual elements with rapid movements. Such actions can be supported by mechanical actuation, although both electrotactile and vibrotactile displays have pros and cons as mentioned above. Unlike TeslaTouch and Tixel, Tactus can provide completely transparent physical buttons that dynamically appear and disappear on a flat touchscreen, allowing application-based control. In addition to the efforts of professionals, users themselves have also tried to attach different types of screen protection to the surfaces of their devices, such as glossy or matte films, which protect the screen from scratches and allow the user to feel a high-quality texture at low cost. To meet these demands, 3M™ released soft and matte Mobile Shield protectors made of a shape-memorizing material (polyurethane), which has excellent flexibility and resiliency that allows the protector to easily return to its original shape even when the user constantly touches the surface with a rigid probe.