The sculptures are machined to match the exact dimensions of an iPhone 4S. Each piece has a different swipe pattern gilded onto it, using UV-catalyzed human nose grease as the gilding size.

The pattern of 24kt gold on each device in the series corresponds to the accumulated smudges after that kind of mobile interaction. For example, “Witness” features a strong diagonal smudges corresponding to the frequent zoom-and-pan involved in that activity.

Further remarks