I'm pretty skeptical. It does not work well every time... The first time, it worked pretty well, the next time, it looks like it was drinking and as soon as I had my hands in front of the sensor, it begged to death and put letters no matter how on the screen when I did not have my fingers on the keys, just above... I do not know if in the long run, it will work well but I will not buy. In addition, the noise is just awful... No possibility to reduce or turn off the sound that rings with each key...