Global tech market leader combines trusted hardware and powerful software to ensure users can easily share important information and urgent messages on site SEATTLE, June 30, 2025 /PRNewswire/ -- Promethean, a leading global tech company and brand owned by Mynd.ai, Inc. (NYSE American: MYND), has announced the new ActivPanel D-Series—a non-interactive digital signage solution available this summer in the U.S. and expanding to international markets later this year. Promethean's new ActivPanel D-Series di ...