The Photovore is a robot that chases the light. This type of Robot is best suitable for military applications. The term phototrophic implies attraction towards the light; these robots actually follow the light using a set of sensors which are also called positive prototroph. These kinds of robots are useful where solar self-charging technology is used in them so that they can trace the sun and follow the sun. On the contrary photophobic is exactly the opposite where it does not follow the light or more precisely it avoids light and goes to places where there is less light.