The Microsoft Surface tablet has a pressure sensitive keyboard hiding in its 3mm cover called Type Cover which will let you transform the tablet to resemble more of a computer on the go without having the need to carry a bulky keyboard case.
Type Cover latches onto the Surface tablet with magnets like Apple's Smart Cover and "senses keystrokes as gestures" and has a touchpad area for cursor manipulation. It has a built in accelerometer and it knows when its folded back behind the tablet. Microsoft says that the Type Cover can detect the force you place on it to the gram and won't input characters when you just have your fingers resting on the keys.
Four years ago, Microsoft showed this tech off as a project at its Research Summit and it was called the unMouse Pad last time. It used force sensing resistors to create a paper thin multitouch trackpad that was pressure sensitive. That technology is in the Type Cover today.
The tablet also has the Kickstand, which is made using a material called VaporMG (Vapor Mag), and is only .65mm thick and gives the folding hinge the look and feel of a car door. Check out a video of it in action below: