1. Product overview: The laser projection keyboard is a keyboard connected to the main device through Bluetooth HID, suitable for desktop computers, tablet computers, smart phones, game consoles and other devices. As a new input device, the projection keyboard uses the built-in infrared laser transmitter to project the outline of the standard keyboard on the working plane, the finger clicks the pattern, and the click position is determined by optical recognition to complete the information input. The laser projection keyboard has no physical buttons, and is connected to the main device through Bluetooth. It is small in size, easy to carry, and can adapt to most working environments. 2. Working principle: The keyboard projector of the laser projection keyboard projects the outline of the keyboard on the work surface. Its bottom end emits infrared light to detect objects such as fingers. When an object passes through the infrared light irradiation area, the sensor detects the infrared light reflected by the object. Perform keyboard actions by analyzing the position and movement of objects. 3. Product Features: • Portable Design • Standard keyboard key size and spacing for easy operation • No moving parts for durability • Built-in rechargeable lithium battery for easy portability • Compatible with the latest operating systems: Windows XP and above, Windows Phone7 and above, iOS4 and above, Android 2.0 and above, Mac OS X and above.