1. In a resistive column-row matrix comprising a plurality of columns and a plurality of rows and configured to provide output in response to touch or other physically-applied inputs, a method of discerning one or more input locations on the resistive column-row matrix, comprising: receiving one or more physically-applied inputs at the resistive column-row matrix; during application of the one or more physically-applied inputs, performing a hierarchical scan of each of the plurality of rows comprising the resistive column-row matrix, the hierarchical scan of each row determining whether the one or more physically-applied inputs are causing activation of any column-row cell within the row by concurrently applying a scan control signal to all of the plurality of columns and reading a single scan voltage for the row; performing a supplemental scan within the row if it is determined that a physically-applied input is causing activation of any column-row cell within the row; and generating, based on the hierarchical scan and the supplemental scan, an output indicative of the one or more input locations on the resistive column-row matrix of the one or more physically-applied inputs.