And we thought Apple scoffed at the Blackberry Storm’s haptic feedback. Guess not, because Apple has filed a patent
that not only recognizes the limitations of a purely smooth touchscreen
(can’t see what you are pressing), but shows haptic display technology
as the solution.
If you are a young-ish iPhone 3G S owner, and you haven't irreversibly
damaged your ears with awesome headphones, you may have noticed your
iPhone emitting an incredibly high-pitched sound after system sounds
like unlocking the phone or text messaging.