The letters and numbers may be the same, but everything else about the Smart Keyboard is completely new. Its top layer is crafted from a sheet of highly durable custom-woven fabric that's laser ablated to form the shape of each key. The fabric also provides the spring-like tension for each key, eliminating the need for conventional mechanisms. So the Smart Keyboard is just 4 mm thin while providing the accuracy, stability, and satisfying key feel you expect.