1. An apparatus comprising: a flexible substrate; a component supported by the flexible substrate; a first input electrode, supported by the flexible substrate and configured to form a first capacitor with a second input electrode and to provide an input to the component; a first output electrode, supported by the flexible substrate and configured to form a second capacitor with a second output electrode and to provide an output from the component, wherein the component, the first input electrode and the first output electrode are surface-mounted and/or printed/stamped/pressed and/or transparent, and wherein the second input electrode and the second output electrode are surface-mounted and/or printed and/or transparent.