A fairly interesting gadget is the projection keyboard. The principle of operation of the device is that on the surface the keys are displayed, the presses of which are fixed by a special optical sensor. True, there is no tactile connection (however, like with touch keyboards), but you can easily change the size of the virtual device. In addition, the device is compact and portable, which allows you to take it with you. Now on sale is the stylish Serafim ODIN trackpad. A miniature 40-gram projector connects to a computer via USB and produces an image in 80×80 mm format. The user receives 2 traditional buttons (left and right) and an additional one to activate any programmed action. The device understands the classic gestures for touch trackpad scrolling and zooming. Serafim ODIN can work both in the dark and when lit with fluorescent lamps. In Japan, a projection mouse costs about $ 83.