Apple released a new video advertising the capabilities of the iPhone. In line with Apple's style of promoting their products, they show how the device becomes what the user needs it to be, essentially becoming invisible. Here's the video:
When I watched it for the first time, I kept thinking how some of the apps the the accessories are the first steps towards turning the iPhone (which is already a PADD) into this:
tricorderunbox4 by Bobbie Johnson, on Flickr
Sure, there have been examples of hardware that adds one or two diagnostic tools to smartphones (see here and here), not to mention the capabilities the right software adds, but I really can't wait to have the scanning features a concept like this offers in the palm of my hand.