A touch interface includes a plurality of emitters arranged along a first edge of a flexible electronics component to emit light that propagates across a surface of the flexible electronics component and a plurality of receivers arranged along a second edge of the flexible electronics component to detect light. The touch interface further includes a touch controller coupled to the plurality of emitters and the plurality of receivers. The touch controller is configured to cause one or more of the plurality of emitters to emit light, receive one or more signals indicative of detected light at the plurality of receivers, and determine at least one of a user interaction with the flexible electronics component or a current state of flexing of the flexible electronics component.