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Does the modern virtual keyboard exist?

Speaking of virtual keyboards, most people should have seen them in many sci-fi movies. There is no physical, or only a piece of glass, or holographic technology, which can be operated with a single touch. Is there any product used in the real world? I am more ignorant and always think that it is at the stage of conceptual products until the author sees this product – Magic Cube projection keyboard.
The projection keyboard can be said to be a kind of virtual keyboard. It does not have physical buttons. It has been researched and developed by many companies in the last ten years, but there have been no promotional pictures and there is no real thing in the market. Try it out, a little Baidu will find that NEC, Siemens and other well-known technology companies have had similar concept products. Until recently, a Korean company, Celluon, really launched a product for market sales, Magic Cube, which was then introduced by Shenzhen Xingdaer Technology Co., Ltd., mainly for the gift market. This should also be considered the first virtual keyboard brand that appears.
When I got this product, I was very curious as to how such a small thing could be called the keyboard, until the package was removed, and the small switch behind it was opened… The editorial room was shocked.
The shape of the Magic Cube is a rounded rectangular shape. It is very small in size and only as long as the middle finger of the finger. It is perfectly fine in the pocket. The all-black shell is made of rubber, which resists a certain impact and has a smooth surface texture, but this material is often easier to vacuum.
Laser projectors, sensors, LED indicators and infrared emitters are distributed on the front and switches and USB ports on the back. There is a small switch next to the USB interface, which corresponds to the HID and SPP modes of Bluetooth. The SPP mode is mainly used when the Bluetooth connection is incompatible with some older mobile phones, and generally only needs to maintain the default HID mode. can.

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