An accessory, electronic device and method for using the same are disclosed herein. The accessory may include a plurality of flexible structures formed in the top surface, each of the plurality deformable in response to external pressure to cause a respective portion of the bottom surface to contact the electronic device, and return to an original shape when the external pressure is removed. The electronic device may include a processor, which may execute the method including when an accessory comprising at least one physical key is mounted on a touch screen of the electronic device, detecting by a processor of the electronic device a location of the accessory on the touch screen, and displaying on a display of the electronic device a virtual keypad in the detected location of the accessory.