We present Scratch Input, an acoustic-based input technique that relies on the unique sound produced when a fingernail is dragged over the surface of a textured material, such as wood, fabric, or wall paint. We employ a simple sensor that can be easily coupled with existing surfaces, such as walls and tables, turning them into large, unpowered and ad hoc finger input surfaces. Our sensor is sufficiently small that it could be incorporated into a mobile device, allowing any suitable surface on which it rests to be appropriated as a gestural input surface. Several example applications were developed to demonstrate possible interactions. We conclude with a study that shows users can perform six Scratch Input gestures at about 90% accuracy with less than five minutes of training and on wide variety of surfaces.
Molto figo come prototipo. Mi immagino altri gadget sfiziosi come interruttori della luce invisbili, tapparelle che si chiudono solo toccando le pareti o temperatura dei termosifoni attivate con una schicchera. Senza contare poi che potremmo accendere lo stereo come Fonzie!
Maggiori info nel sito dell’ ideatore Chris Harrison