Switch is a control that enables users to switch the option on or off. Again, it is applied with the high level of efficiency and popularity in modern interfaces because it presents the direct imitation of switches people are accustomed to in real life. The important point of consideration here is that states of the switch should be visibly clear and distinctive so that user could avoid applying effort to understand if the option is active or not. Various sorts of contrast and slight animation can solve the problem making the experience simple and user-friendly.