While Apple wants its patent to cover any kind of electronic device possible, most of its descriptions and all of its drawings refer to the Apple Watch and to what Apple refers to as actuators. These are components that respond to a processor and cause other elements to move or rearrange. "[For example, a] wearable item comprises a flexible strap and actuators within the flexible strap," says the patent. "The actuators are configured to dynamically form protrusions along the flexible strap. The protrusions present tactilely-perceptible information." These protrusions are similar to the raised dots in Braille, but Apple says they needn't be confined to that one system. Rather than following the established patterns of whole words in Braille, the same protrusions could be configured to "also or instead be dynamically and/or selectively actuated to form [the] shapes of alphanumeric characters."
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