The TacType Keyboard (formerly known as the iKeyboard) is available from Amazon for $18.50. It's a very lightweight keyboard that sticks right onto the iPad. It comes off just as easily. The keys remind me of the "Pop-A-Cell" from APH. It's nice to use with students who have low vision, as the keys give an auditory feedback as you hear them "pop" as they type. This keyboard eliminates the need to carry an additional keyboard with the student's iPad. It works great if the student is using their iPads for notetaking.