The whole notion, then, is one that at the interface there are physical properties in that transducer — in this case it's pressure and touches — that allow you to present things to the user that you could never present before.
La percepción entonces es que, en la interfaz, existen propiedades físicas en ese transductor... en este caso, presión y contacto... que les permite presentar cosas al usuario que no se le presentaron antes.