You no longer have to carry keyboards around or type in using the tiny keyboard of your iPhone or tablets. A whole new range of virtual keyboards are available, which are ready to perform your typing task. These devices are connected to the computer either through the Bluetooth or the USB port of the PC. A laser or Beamer projects the virtual image of a keyboard on to a hard level surface,a sensor or camera picks up the finger movements. A software then converts the coordinates into characters.