Like the previous ones, it would be to use the areas on either side of the trackpad, which are only used to put your hands on it. After a brief inventory of traditional components, their resistance to shocks and scratches or their comfort in use, Cupertino looks at the materials likely to be employed.
The least we can say is that Apple does not lack imagination. She evokes a
housing formed at least partially from a transparent dielectric material such as plastic, glass or ceramic material. She specifies that the latter would be completely covered with it (unibody, the return)
continuously or seamlessly which can improve the look and feel of the device without having the drawbacks of some traditional designs. It then expands on the use as a side load mat with -finally- a small design.