Abstract: A system for generating and controlling a variably displayable virtual keypad includes a mobile device with a screen on which is displayable selected content, holographic projectors, from image generating data retrievable from a memory, a virtual keypad appearing to be free-floating and suspended in mid-air. An input identification unit identifies a virtual key pressing operation performed in conjunction with the generated virtual keypad, determining which key of the virtual keypad has been virtually pressed, and transmitting an input command in response to the virtual key pressing operation by which the displayed content is modifiable. The input identification unit includes a 3D camera capturing gestures of a user hand and transmitting a signal indicative of gesture related data to a microprocessor for translating the gesture related data into the input command by instructions stored in the memory device.