A touchscreen sensing module includes a first baseplate, a first conductive layer, a second baseplate, a second conductive layer, and a supporting substrate. The light is eventually emitted from the aperture, to thereby provide lighting. The massage chair further includes a footrest rotatably attached to the auxiliary seat portion, the footrest being movable forwards and backwards together with the auxiliary seat portion. The cover is completely removable from the frame so that it can be machine washed. In certain embodiments, the invention provides methods and devices for imaging changes of extracellular matrix components by living cells.