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Haptic feedback

Haptic feedback refers to devices communicating information to the user through the sense of touch. For example, a vibrating video game controller may use haptic feedback to shake in the user's hand when his or her character is attacked.

In modern smartphones, haptic feedback is used to compensate for the stationary nature of touchscreens. Normally, when a user interacts with a device such as a computer, he or she receives feedback when entering in data by feeling the keyboard keys move and generate resistance, and feeling the mouse button click when depressing it. For a user comfortable with such a system, typing on a non-moving touchscreen keyboard may feel uncomfortable or awkward, lacking the expected feedback. To compensate for this, devices with haptic feedback use small vibrations to let the user know when each keystroke is entered.

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