Apple revealed the iPad keyboard dock to the public with a blank key. Overlooked by almost everyone, the mystery key was finally noticed by a member of the Mac Rumors forum, Macduke. The location of the key is in the middle above the number 6 key, traditionally where F6 would be. Macduke believes Apple may assign a function to the blank key before shipment; he also speculates that the function could be to launch a Mac-like dashboard with plenty of widgets, perhaps a “back to home” type of button? Ideal for using as central command screen for communication services like twitter, facebook and iBooks.