According to official Xiaomi news, MIUI Labs is preparing to add new features to MIUI (3D smart gestures), through which it will be possible to activate certain applications and functions without touching the screen at all.
Σwith a video posted on Weibo, we see that the camera can be activated by drawing an imaginary circle with the smartphone in our hand.
Similarly, the Music application can be activated by designing the letter Μ. Currently, these new features will only be available to MIUI beta developer distributions.