It is very essential for users to know whether the action has been successfully performed. A good feedback method can make touch interfaces easy to understand, learn and operate.
Types of feedback:
There are 3 types of feedback relating to touch screens:
• Visual feedback
• Sound feedback
• Haptic feedback
It includes visual bounce, color changes when action is performed, screen is moved left/ right/ up/ down, target element glows when touched, 3D motion of performed action, hourglass display to showcase waiting period etc.
When the user touches the target element, several sound feedbacks can be provided. For example, click sound, beep sound,actions can be spoken by system etc.
A vibration effect can be provided to every touch done by a user. This is will indicate user about his performed action.