Talk:Working with Tactile Feedback Client API - S60 Touch UI
From Nokia Developer Wiki
Tactile Feedback improves the usability of the touch screens. With this feature, user better understands the reaction of GUI elements, interface becomes more friendly. Also this feature is particularly important for resistive touch screens which are widely used in devices based on S60 5th, because such screens require some effort when pressed. It should be noted that most of standard GUI elements support this feature. In case of creating your own GUI also encouraged to support this feature. You can use this article, which shows a simple example that demonstrates how to use Tactile Feedback. This article also contains a link to the demo project, which is useful for experimenting with new possibilities.