Indium is a soft, silvery-white metal and the chemical element with the symbol In and atomic number 49. It is utilized extensively in technology due to its unique physical properties, particularly its ability to form transparent conducting oxides (TCOs). These compounds are crucial components in the production of modern display technology, including touchscreens and flat-panel displays, where they conduct electricity while allowing light to pass through. Furthermore, the element is incorporated into specialized alloys and semiconductors, making it valuable in solar energy applications and in advanced electronic components where predictable electrical conductivity and structural stability are required.