Out of doubt, Logitech is one of the leaders in the market of keyboards and mice. Among other things, this leadership allows the company to manufacture devices not for common users. They are not popular and do not bring much profit. But noblesse oblige, the company can afford it, so why not? This mouse is not the first concept from Logitech. We can also mention diNovo Media Desktop Laser, which exploded the market with its crazy price and innovations. By the way, those kits have been available in stores for over three years, and they have gone through several redesigns. If it had been unprofitable, it wouldn't have lasted this long. It's hard to say whether this device will survive in the market, but it's certainly interesting and very unusual.
Long ago, in the age of 386 processors, we heard rumors about a mouse working in a 3D system of coordinates. Position of the mouse was read by an angle bar mounted on a monitor. It was demonstrated only at expos in a hoopla game. We haven't seen it, and we heard that it hadn't come to commercial production. But it paved the way.
Source: Digit-Life