Ghost Scraper is a wireless device for sensing the urban landscape,
using tectile sensing for sonic activation of ghosts.
Ghost Scraper is sensing the invisble sonic layers in the materiality
of the city, such as concrete, aspalt and other materials that a city is built of.
It is using embedded computing, gumstix, and real-time audio processing in Pure Data.
An auditory face to a place is given using Ghost Scraper.