The iPad has these, plus a dedicated home button, a key to start a photo slideshow and a search key. But, smack in the middle, there's a blank key, a mystery button with nothing printed upon it.

11:58 am February 25, 2010 By Julian Horsey An eagle-eyed member of the Mac Rumors website, Macduke, has spotted an intriguing feature on Apple’s new iPad keyboard dock: a blank key.

It started in 2005 when, on a mission to become a faster and more accurate typist, he created a completely blank keyboard. His idea worked, and it gave rise to the Das Keyboard, the first mass ...