The TouchFire Screen-Top Keyboard is a light, silicone keyboard that lays on top of the iPad's soft keyboard and provides a tactile experience. TouchFire was a Kickstarter sensation, raising 20 times the money its inventors requested. Click here for a full TouchFire review
, including video.
When you want to see the entire iPad screen unobstructed you can fold the TouchFire keyboard down and out of the way.