Photograph of monitor in use in a moving vehicle, showing the Android user interface monitoring surface conditions. The yellow line shows surface temperature and the blue line water layer. The number 0.80 is the current friction value.
Screen shot of a cell phone user interface during snowy (grey), icy (red), slushy (magenta), wet (blue) and moist (dark blue) surface conditions. The yellow dots have been measured by an acceleration based Friction Meter installed in the same cell phone.