Akin to the psycho-geographical derive, we walked through electromagnetic and coding territory, to observe what we would find rather than seeking out. Our actions, a form of contemporary geomancy, concentrated on the interacting signals between the atmosphere, the ground, and ourselves – all potential sites of transmitting, receiving, disrupting, and originating signals. Unlike outright divination, the more general category of scrying is a system for asking questions without solutions.
http://sonicacts.com/2015/blog/geomancy-and-earth-codes