Samsung SCH-W559 World’s First Vibrating Touchscreen

Here's upcoming cellphone from Samsung, this phone (SCH-W559) claimed the first Vibrating Touchscreen phone. Other features include a 1.3-megapixel camera, Bluetooth, USB connectivity, and audio/video playback.
how the vibrating touchscreen works:?

The unit’s QVGA touchscreen is meant to be a hands-on experience, and whether you use a stylus or the tips of your finger, the phone will provide a vibrating cue, which can be adjusted and customized within the phone’s software, whenever you touch a virtual button. Immersion claims that its technology allows the on-screen buttons to feel more like “mechanical keys” rather than just a sheet of plastic