Hammacher Schlemer, the virtual keyboard for iPad and iPhone

I admit, a little intimidating 'the idea of ​​typing on the emptiness of their desk, but the virtual keyboard Bluetooth Hammacher Schlemer work through this' holographic' principle.

If you do not mind the idea of ​​having an aspect a little 'surreal, this keyboard is an image generated by a laser on any flat surface. Through it all you iPhone, iPad or Android will have fun writing about full-size keys, even if a bit 'too light ... to crush. It is worse than a touch screen keyboard, in the end.

According to manufacturers the keyboard recognizes the "pressure" by an infrared optical sensor, projected horizontally a few millimeters from the surface. Since when flying keyboard fingers should not be "obscured" by this beam at each other, everything works pretty well. The company boasts a 100% accuracy.

The speed is not bad, given that the keyboard is able to follow 400 characters per minute. Certainly when it comes to keyboards, size does matter, even beyond the absence of physical sensation of touch.

The Virtual Keyboard costs $ 200.