Intellego Technologies AB engages in the research, development, and trade of photochromic indicator technology. It offers an ink that changes in color based on exposure to ultraviolet (UV) irradiation. The firm carries the SmartSun Band that indicates the UV vulnerability and mitigates sunburn and long-term skin damage. The company was founded by Claes Ian Lindahl on August 31, 2011 and is headquartered in Stockholm, Sweden.