Indium is a soft, silvery-gray post transition metal with a melting point of 157 degrees Celsius. It is extremely soft to the point where you can deform it entirely in your hands. Like a slightly toxic, metallic, play-dough! It has oxidation states of +1 and +3, with the latter being most common. It has many similarities on properties to Gallium. It was discovered in 1863 by the German chemist Ferdinand Reich. 

Indium Tin oxide is used in liquid crystal displays because it is transparent and electrically conductive. It is also used as a solder, and in alloys. Additionally, it is used in solar cells.