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| Bluetooth laser virtual keyboard |
In this world of virtual reality of almost everything, we see things which are far away from us in front of us without moving an inch. So sit comfortably and use this virtual keyboard without using keyboards anymore. This is not any kind of prank gadget. A laser projected keyboard is really here. The device projects a laser keyboard on any flat surface, and you can then use it like a normal keyboard. Every keystroke is even accompanied by the sound of a key-hit as in a traditional keyboard. Available for around $150 (Rs. 7,752).
A projection keyboard is a virtual keyboard that can be projected and touched on any surface. The keyboard watches finger movements and translates them into keystrokes in the device.
How a projection keyboard generally works:
1. A laser or beamer projects visible virtual keyboard onto level surface
2. A sensor or camera in the projector picks up finger movement
3. detected co-ordinates determine actions or characters to be generated
An optical virtual keyboard was invented and patented by IBM engineers in 1992. It optically detects and analyses human hand and finger motions and interprets them as operations on a physically non-existent input device like a surface having painted or projected keys. In that way it allows to emulate unlimited types of manually operated input devices (mouse, keyboard, etc.). All mechanical input units can be replaced by such virtual devices, optimized for the current application and for the user's physiology maintaining speed, simplicity and unambiguity of manual data input.
