A composition comprising a first compound and a second compound is described. The nursing cells are permanently linked inside the box. Interruption of light otherwise passing into any one of the plurality of light-sensitive detectors causes illumination of its own corresponding indicating light to cease during the interruption of light, and the illumination to return once the interruption of light terminates. Invariable body characteristics of the driver or pilot, for example a finger print, are stored in the enabling element. This, in turn, translates to a better effective link quality between the UE and BS and higher indoor rates, which otherwise may have been not as good as a consequence of poor direct link between the UE and the BS. Further, a fish activity state can be transmitted to a remote device thus giving the fisherman more freedom to move about while the rod is left unattended.