Touchable objects should be large enough to be manipulated with a finger, high contrast, colorful, and well separated on the screen to avoid accidental selection.

• 单击对象应该足够大，这样才可以便于手指的操作，对比度要高，并且色彩要鲜明。 屏幕上各个对象之间不要太近，以防不小心误操作。