but it wasnt matePretty much every phone before the iPhone used a recessed button for unlock or sequential button presses. Now, I do believe this patent is a little too obvious and keeping people to use a slide to unlock for 14 years is ridiculous, but I do believe it was somewhat novel at the time.
here is another tocuhscreen phone out a couple of years before the iphone
http://en.wikipedia.org/wiki/Neonode#N1m
it used slide to unlock the touchscreen phone as well

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