我认为这个算法很好,让大拇指和食指竖着最容易实现捏合动作的监视,不要把它们横着放,可以用向上竖着的大拇指表示增加音量,用向下竖着的大拇指表示减小音量,用掌心朝下手指并拢上翻和下翻表示切换电视频道,用食指左划和右划表示切换应用。 
I think this algorithm is great, it is easier to achieve pinching action when the thumb and forefinger are placed upright. Do not place them horizontally. You can increase the volume with the thumb pointing upwards, decrease the volume with the thumb pointing downwards, switch TV channels by flipping the palm downwards and bringing the fingers together and apart, and switch applications by swiping left and right with the index finger.